diff --git a/x-pack/legacy/plugins/siem/public/components/timeline/insert_timeline_popover/index.test.tsx b/x-pack/legacy/plugins/siem/public/components/timeline/insert_timeline_popover/index.test.tsx
new file mode 100644
index 0000000000000..adac26a8ac92b
--- /dev/null
+++ b/x-pack/legacy/plugins/siem/public/components/timeline/insert_timeline_popover/index.test.tsx
@@ -0,0 +1,60 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import React from 'react';
+import { mount } from 'enzyme';
+/* eslint-disable @kbn/eslint/module_migration */
+import routeData from 'react-router';
+/* eslint-enable @kbn/eslint/module_migration */
+import { InsertTimelinePopoverComponent } from './';
+
+const mockDispatch = jest.fn();
+jest.mock('react-redux', () => ({
+  useDispatch: () => mockDispatch,
+}));
+const mockLocation = {
+  pathname: '/apath',
+  hash: '',
+  search: '',
+  state: '',
+};
+const mockLocationWithState = {
+  ...mockLocation,
+  state: {
+    insertTimeline: {
+      timelineId: 'timeline-id',
+      timelineTitle: 'Timeline title',
+    },
+  },
+};
+
+const onTimelineChange = jest.fn();
+const defaultProps = {
+  isDisabled: false,
+  onTimelineChange,
+};
+
+describe('Insert timeline popover ', () => {
+  beforeEach(() => {
+    jest.resetAllMocks();
+  });
+
+  it('should insert a timeline when passed in the router state', () => {
+    jest.spyOn(routeData, 'useLocation').mockReturnValue(mockLocationWithState);
+    mount(<InsertTimelinePopoverComponent {...defaultProps} />);
+    expect(mockDispatch).toBeCalledWith({
+      payload: { id: 'timeline-id', show: false },
+      type: 'x-pack/siem/local/timeline/SHOW_TIMELINE',
+    });
+    expect(onTimelineChange).toBeCalledWith('Timeline title', 'timeline-id');
+  });
+  it('should do nothing when router state', () => {
+    jest.spyOn(routeData, 'useLocation').mockReturnValue(mockLocation);
+    mount(<InsertTimelinePopoverComponent {...defaultProps} />);
+    expect(mockDispatch).toHaveBeenCalledTimes(0);
+    expect(onTimelineChange).toHaveBeenCalledTimes(0);
+  });
+});
diff --git a/x-pack/legacy/plugins/siem/public/components/timeline/insert_timeline_popover/index.tsx b/x-pack/legacy/plugins/siem/public/components/timeline/insert_timeline_popover/index.tsx
index 84bd8c1f302c3..fa474c4d601ad 100644
--- a/x-pack/legacy/plugins/siem/public/components/timeline/insert_timeline_popover/index.tsx
+++ b/x-pack/legacy/plugins/siem/public/components/timeline/insert_timeline_popover/index.tsx
@@ -5,11 +5,14 @@
  */
 
 import { EuiButtonIcon, EuiPopover, EuiSelectableOption } from '@elastic/eui';
-import React, { memo, useCallback, useMemo, useState } from 'react';
+import React, { memo, useCallback, useEffect, useMemo, useState } from 'react';
+import { useLocation } from 'react-router-dom';
+import { useDispatch } from 'react-redux';
 
 import { OpenTimelineResult } from '../../open_timeline/types';
 import { SelectableTimeline } from '../selectable_timeline';
 import * as i18n from '../translations';
+import { timelineActions } from '../../../store/timeline';
 
 interface InsertTimelinePopoverProps {
   isDisabled: boolean;
@@ -17,12 +20,37 @@ interface InsertTimelinePopoverProps {
   onTimelineChange: (timelineTitle: string, timelineId: string | null) => void;
 }
 
-const InsertTimelinePopoverComponent: React.FC<InsertTimelinePopoverProps> = ({
+interface RouterState {
+  insertTimeline: {
+    timelineId: string;
+    timelineTitle: string;
+  };
+}
+
+type Props = InsertTimelinePopoverProps;
+
+export const InsertTimelinePopoverComponent: React.FC<Props> = ({
   isDisabled,
   hideUntitled = false,
   onTimelineChange,
 }) => {
+  const dispatch = useDispatch();
   const [isPopoverOpen, setIsPopoverOpen] = useState(false);
+  const { state } = useLocation();
+  const [routerState, setRouterState] = useState<RouterState | null>(state ?? null);
+
+  useEffect(() => {
+    if (routerState && routerState.insertTimeline) {
+      dispatch(
+        timelineActions.showTimeline({ id: routerState.insertTimeline.timelineId, show: false })
+      );
+      onTimelineChange(
+        routerState.insertTimeline.timelineTitle,
+        routerState.insertTimeline.timelineId
+      );
+      setRouterState(null);
+    }
+  }, [routerState]);
 
   const handleClosePopover = useCallback(() => {
     setIsPopoverOpen(false);
@@ -65,6 +93,7 @@ const InsertTimelinePopoverComponent: React.FC<InsertTimelinePopoverProps> = ({
 
   return (
     <EuiPopover
+      data-test-subj="insert-timeline-popover"
       id="searchTimelinePopover"
       button={insertTimelineButton}
       isOpen={isPopoverOpen}
diff --git a/x-pack/legacy/plugins/siem/public/components/timeline/properties/helpers.tsx b/x-pack/legacy/plugins/siem/public/components/timeline/properties/helpers.tsx
index 4b1fd4b5851c0..0a2ab5c9d186a 100644
--- a/x-pack/legacy/plugins/siem/public/components/timeline/properties/helpers.tsx
+++ b/x-pack/legacy/plugins/siem/public/components/timeline/properties/helpers.tsx
@@ -20,6 +20,7 @@ import {
 import React, { useCallback } from 'react';
 import uuid from 'uuid';
 import styled from 'styled-components';
+import { useHistory } from 'react-router-dom';
 
 import { Note } from '../../../lib/note';
 import { Notes } from '../../notes';
@@ -27,6 +28,7 @@ import { AssociateNote, UpdateNote } from '../../notes/helpers';
 import { NOTES_PANEL_WIDTH } from './notes_size';
 import { ButtonContainer, DescriptionContainer, LabelText, NameField, StyledStar } from './styles';
 import * as i18n from './translations';
+import { SiemPageName } from '../../../pages/home/types';
 
 export const historyToolTip = 'The chronological history of actions related to this timeline';
 export const streamLiveToolTip = 'Update the Timeline as new data arrives';
@@ -111,6 +113,41 @@ export const Name = React.memo<NameProps>(({ timelineId, title, updateTitle }) =
 ));
 Name.displayName = 'Name';
 
+interface NewCaseProps {
+  onClosePopover: () => void;
+  timelineId: string;
+  timelineTitle: string;
+}
+
+export const NewCase = React.memo<NewCaseProps>(({ onClosePopover, timelineId, timelineTitle }) => {
+  const history = useHistory();
+  const handleClick = useCallback(() => {
+    onClosePopover();
+    history.push({
+      pathname: `/${SiemPageName.case}/create`,
+      state: {
+        insertTimeline: {
+          timelineId,
+          timelineTitle: timelineTitle.length > 0 ? timelineTitle : i18n.UNTITLED_TIMELINE,
+        },
+      },
+    });
+  }, [onClosePopover, history, timelineId, timelineTitle]);
+
+  return (
+    <EuiButtonEmpty
+      data-test-subj="attach-timeline-case"
+      color="text"
+      iconSide="left"
+      iconType="paperClip"
+      onClick={handleClick}
+    >
+      {i18n.ATTACH_TIMELINE_TO_NEW_CASE}
+    </EuiButtonEmpty>
+  );
+});
+NewCase.displayName = 'NewCase';
+
 interface NewTimelineProps {
   createTimeline: CreateTimeline;
   onClosePopover: () => void;
diff --git a/x-pack/legacy/plugins/siem/public/components/timeline/properties/index.tsx b/x-pack/legacy/plugins/siem/public/components/timeline/properties/index.tsx
index 8549784b8ecd6..0080fcb1e6924 100644
--- a/x-pack/legacy/plugins/siem/public/components/timeline/properties/index.tsx
+++ b/x-pack/legacy/plugins/siem/public/components/timeline/properties/index.tsx
@@ -141,6 +141,7 @@ export const Properties = React.memo<Props>(
           showTimelineModal={showTimelineModal}
           showUsersView={title.length > 0}
           timelineId={timelineId}
+          title={title}
           updateDescription={updateDescription}
           updateNote={updateNote}
           usersViewing={usersViewing}
diff --git a/x-pack/legacy/plugins/siem/public/components/timeline/properties/properties_right.tsx b/x-pack/legacy/plugins/siem/public/components/timeline/properties/properties_right.tsx
index b21ab5063441e..59d268487cca7 100644
--- a/x-pack/legacy/plugins/siem/public/components/timeline/properties/properties_right.tsx
+++ b/x-pack/legacy/plugins/siem/public/components/timeline/properties/properties_right.tsx
@@ -14,7 +14,7 @@ import {
   EuiToolTip,
   EuiAvatar,
 } from '@elastic/eui';
-import { NewTimeline, Description, NotesButton } from './helpers';
+import { NewTimeline, Description, NotesButton, NewCase } from './helpers';
 import { OpenTimelineModalButton } from '../../open_timeline/open_timeline_modal/open_timeline_modal_button';
 import { OpenTimelineModal } from '../../open_timeline/open_timeline_modal';
 import { InspectButton, InspectButtonContainer } from '../../inspect';
@@ -79,6 +79,7 @@ interface Props {
   onCloseTimelineModal: () => void;
   onOpenTimelineModal: () => void;
   showTimelineModal: boolean;
+  title: string;
   updateNote: UpdateNote;
 }
 
@@ -104,6 +105,7 @@ const PropertiesRightComponent: React.FC<Props> = ({
   showTimelineModal,
   onCloseTimelineModal,
   onOpenTimelineModal,
+  title,
 }) => (
   <PropertiesRightStyle alignItems="flexStart" data-test-subj="properties-right" gutterSize="s">
     <EuiFlexItem grow={false}>
@@ -135,6 +137,14 @@ const PropertiesRightComponent: React.FC<Props> = ({
               <OpenTimelineModalButton onClick={onOpenTimelineModal} />
             </EuiFlexItem>
 
+            <EuiFlexItem grow={false}>
+              <NewCase
+                onClosePopover={onClosePopover}
+                timelineId={timelineId}
+                timelineTitle={title}
+              />
+            </EuiFlexItem>
+
             <EuiFlexItem grow={false}>
               <InspectButton
                 queryId={timelineId}
diff --git a/x-pack/legacy/plugins/siem/public/components/timeline/properties/translations.ts b/x-pack/legacy/plugins/siem/public/components/timeline/properties/translations.ts
index b47aa071ec3e9..a0783a327ed17 100644
--- a/x-pack/legacy/plugins/siem/public/components/timeline/properties/translations.ts
+++ b/x-pack/legacy/plugins/siem/public/components/timeline/properties/translations.ts
@@ -42,7 +42,7 @@ export const INSPECT_TIMELINE_TITLE = i18n.translate(
 export const UNTITLED_TIMELINE = i18n.translate(
   'xpack.siem.timeline.properties.untitledTimelinePlaceholder',
   {
-    defaultMessage: 'Untitled Timeline',
+    defaultMessage: 'Untitled timeline',
   }
 );
 
@@ -87,7 +87,14 @@ export const STREAM_LIVE_TOOL_TIP = i18n.translate(
 export const NEW_TIMELINE = i18n.translate(
   'xpack.siem.timeline.properties.newTimelineButtonLabel',
   {
-    defaultMessage: 'Create New Timeline',
+    defaultMessage: 'Create new timeline',
+  }
+);
+
+export const ATTACH_TIMELINE_TO_NEW_CASE = i18n.translate(
+  'xpack.siem.timeline.properties.newCaseButtonLabel',
+  {
+    defaultMessage: 'Attach timeline to new case',
   }
 );
 
diff --git a/x-pack/legacy/plugins/siem/public/components/timeline/timeline.test.tsx b/x-pack/legacy/plugins/siem/public/components/timeline/timeline.test.tsx
index ea4406311d7cc..22f1c525a6c2a 100644
--- a/x-pack/legacy/plugins/siem/public/components/timeline/timeline.test.tsx
+++ b/x-pack/legacy/plugins/siem/public/components/timeline/timeline.test.tsx
@@ -115,7 +115,7 @@ describe('Timeline', () => {
           .find('[data-test-subj="timeline-title"]')
           .first()
           .props().placeholder
-      ).toContain('Untitled Timeline');
+      ).toContain('Untitled timeline');
     });
 
     test('it renders the timeline table', () => {
diff --git a/x-pack/legacy/plugins/siem/public/pages/case/components/case_view/index.test.tsx b/x-pack/legacy/plugins/siem/public/pages/case/components/case_view/index.test.tsx
index 41100ec6d50f1..3f4a83d1bff33 100644
--- a/x-pack/legacy/plugins/siem/public/pages/case/components/case_view/index.test.tsx
+++ b/x-pack/legacy/plugins/siem/public/pages/case/components/case_view/index.test.tsx
@@ -7,6 +7,9 @@
 import React from 'react';
 import { Router } from 'react-router-dom';
 import { mount } from 'enzyme';
+/* eslint-disable @kbn/eslint/module_migration */
+import routeData from 'react-router';
+/* eslint-enable @kbn/eslint/module_migration */
 import { CaseComponent } from './';
 import { caseProps, caseClosedProps, data, dataClosed } from './__mock__';
 import { TestProviders } from '../../../../mock';
@@ -35,6 +38,13 @@ const mockHistory = {
   listen: jest.fn(),
 };
 
+const mockLocation = {
+  pathname: '/welcome',
+  hash: '',
+  search: '',
+  state: '',
+};
+
 describe('CaseView ', () => {
   const updateCaseProperty = jest.fn();
   /* eslint-disable no-console */
@@ -59,6 +69,7 @@ describe('CaseView ', () => {
   beforeEach(() => {
     jest.resetAllMocks();
     useUpdateCaseMock.mockImplementation(() => defaultUpdateCaseState);
+    jest.spyOn(routeData, 'useLocation').mockReturnValue(mockLocation);
   });
 
   it('should render CaseComponent', () => {
diff --git a/x-pack/legacy/plugins/siem/public/pages/case/components/user_list/index.tsx b/x-pack/legacy/plugins/siem/public/pages/case/components/user_list/index.tsx
index 74a1b98c29eef..9ace36eea1e9e 100644
--- a/x-pack/legacy/plugins/siem/public/pages/case/components/user_list/index.tsx
+++ b/x-pack/legacy/plugins/siem/public/pages/case/components/user_list/index.tsx
@@ -58,7 +58,7 @@ const renderUsers = (
       <EuiFlexItem grow={false}>
         <EuiButtonIcon
           data-test-subj="user-list-email-button"
-          onClick={handleSendEmail.bind(null, email)} // TO DO
+          onClick={handleSendEmail.bind(null, email)}
           iconType="email"
           aria-label="email"
         />