diff --git a/x-pack/solutions/observability/plugins/exploratory_view/public/typings/fetch_overview_data/index.ts b/x-pack/solutions/observability/plugins/exploratory_view/public/typings/fetch_overview_data/index.ts
index f338354d52265..24770f448873d 100644
--- a/x-pack/solutions/observability/plugins/exploratory_view/public/typings/fetch_overview_data/index.ts
+++ b/x-pack/solutions/observability/plugins/exploratory_view/public/typings/fetch_overview_data/index.ts
@@ -69,13 +69,18 @@ export type FetchData<T extends FetchDataResponse = FetchDataResponse> = (
   fetchDataParams: FetchDataParams
 ) => Promise<T>;
 
-export type HasData<T extends ObservabilityFetchDataPlugins> = (
+export type HasData<T extends keyof ObservabilityHasDataResponse> = (
   params?: HasDataParams
 ) => Promise<ObservabilityHasDataResponse[T]>;
 
 export type ObservabilityFetchDataPlugins = Exclude<
   ObservabilityApp,
-  'observability-overview' | 'fleet' | 'synthetics' | 'profiling' | 'observability-onboarding'
+  | 'observability-overview'
+  | 'fleet'
+  | 'synthetics'
+  | 'profiling'
+  | 'observability-onboarding'
+  | 'alerts'
 >;
 
 export interface DataHandler<
diff --git a/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/alert_details.tsx b/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/alert_details.tsx
index b03d9d52da2a1..68546f8e1454f 100644
--- a/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/alert_details.tsx
+++ b/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/alert_details.tsx
@@ -5,7 +5,7 @@
  * 2.0.
  */
 
-import React, { useEffect, useState } from 'react';
+import React, { useCallback, useEffect, useState } from 'react';
 import { useHistory, useLocation, useParams } from 'react-router-dom';
 import { usePerformanceContext } from '@kbn/ebt-tools';
 import { i18n } from '@kbn/i18n';
@@ -54,6 +54,7 @@ import { AlertOverview } from '../../components/alert_overview/alert_overview';
 import { CustomThresholdRule } from '../../components/custom_threshold/components/types';
 import { AlertDetailContextualInsights } from './alert_details_contextual_insights';
 import { AlertHistoryChart } from './components/alert_history';
+import StaleAlert from './components/stale_alert';
 
 interface AlertDetailsPathParams {
   alertId: string;
@@ -107,12 +108,11 @@ export function AlertDetails() {
   const CasesContext = getCasesContext();
   const userCasesPermissions = canUseCases([observabilityFeatureId]);
   const ruleId = alertDetail?.formatted.fields[ALERT_RULE_UUID];
-  const { rule } = useFetchRule({
+  const { rule, refetch } = useFetchRule({
     ruleId,
   });
   const [alertStatus, setAlertStatus] = useState<AlertStatus>();
   const { euiTheme } = useEuiTheme();
-
   const [sources, setSources] = useState<AlertDetailsSource[]>();
   const [activeTabId, setActiveTabId] = useState<TabId>(() => {
     const searchParams = new URLSearchParams(search);
@@ -179,9 +179,9 @@ export function AlertDetails() {
     { serverless }
   );
 
-  const onUntrackAlert = () => {
+  const onUntrackAlert = useCallback(() => {
     setAlertStatus(ALERT_STATUS_UNTRACKED);
-  };
+  }, []);
 
   useEffect(() => {
     if (!isLoading && !!alertDetail && activeTabId === OVERVIEW_TAB_ID) {
@@ -227,6 +227,15 @@ export function AlertDetails() {
     */
     isAlertDetailsEnabledPerApp(alertDetail.formatted, config) ? (
       <>
+        <EuiSpacer size="m" />
+        <StaleAlert
+          alert={alertDetail.formatted}
+          alertStatus={alertStatus}
+          rule={rule}
+          onUntrackAlert={onUntrackAlert}
+          refetchRule={refetch}
+        />
+
         <EuiSpacer size="m" />
         <EuiFlexGroup direction="column" gutterSize="m">
           <SourceBar alert={alertDetail.formatted} sources={sources} />
diff --git a/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/components/stale_alert.test.tsx b/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/components/stale_alert.test.tsx
new file mode 100644
index 0000000000000..9c8288da36d5b
--- /dev/null
+++ b/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/components/stale_alert.test.tsx
@@ -0,0 +1,91 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React from 'react';
+import { render } from '../../../utils/test_helper';
+import { alert } from '../mock/alert';
+import { useKibana } from '../../../utils/kibana_react';
+import { kibanaStartMock } from '../../../utils/kibana_react.mock';
+import { useBulkUntrackAlerts } from '../hooks/use_bulk_untrack_alerts';
+import StaleAlert from './stale_alert';
+import { Rule } from '@kbn/triggers-actions-ui-plugin/public';
+import { TopAlert } from '../../../typings/alerts';
+
+jest.mock('../../../utils/kibana_react');
+jest.mock('../hooks/use_bulk_untrack_alerts');
+
+const useKibanaMock = useKibana as jest.Mock;
+const mockKibana = () => {
+  useKibanaMock.mockReturnValue({
+    services: {
+      ...kibanaStartMock.startContract().services,
+      http: {
+        basePath: {
+          prepend: jest.fn(),
+        },
+      },
+    },
+  });
+};
+
+const useBulkUntrackAlertsMock = useBulkUntrackAlerts as jest.Mock;
+
+useBulkUntrackAlertsMock.mockReturnValue({
+  mutateAsync: jest.fn(),
+});
+
+const ruleMock = {
+  ruleTypeId: 'apm',
+} as unknown as Rule;
+describe('Stale alert', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+    mockKibana();
+  });
+
+  it('should show alert stale callout', async () => {
+    const staleAlert = render(
+      <StaleAlert
+        alert={alert}
+        alertStatus="active"
+        rule={ruleMock}
+        refetchRule={() => {}}
+        onUntrackAlert={() => {}}
+      />
+    );
+
+    expect(staleAlert.queryByTestId('o11yAlertDetailsAlertStaleCallout')).toBeInTheDocument();
+    expect(
+      staleAlert.queryByTestId('o11yAlertDetailsAlertStaleCalloutEditRule')
+    ).toBeInTheDocument();
+    expect(
+      staleAlert.queryByTestId('o11yAlertDetailsAlertStaleCalloutMarkAsUntrackedButton')
+    ).toBeInTheDocument();
+  });
+
+  it('should NOT show alert stale callout < 5 days', async () => {
+    const alertUpdated = {
+      ...alert,
+      start: new Date(Date.now() - 4 * 24 * 60 * 60 * 1000), // 4 days ago
+    } as unknown as TopAlert;
+    const staleAlert = render(
+      <StaleAlert
+        alert={alertUpdated}
+        alertStatus="active"
+        rule={ruleMock}
+        refetchRule={() => {}}
+        onUntrackAlert={() => {}}
+      />
+    );
+
+    expect(staleAlert.queryByTestId('o11yAlertDetailsAlertStaleCallout')).toBeFalsy();
+    expect(staleAlert.queryByTestId('o11yAlertDetailsAlertStaleCalloutEditRule')).toBeFalsy();
+    expect(
+      staleAlert.queryByTestId('o11yAlertDetailsAlertStaleCalloutMarkAsUntrackedButton')
+    ).toBeFalsy();
+  });
+});
diff --git a/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/components/stale_alert.tsx b/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/components/stale_alert.tsx
new file mode 100644
index 0000000000000..f505b07d183ba
--- /dev/null
+++ b/x-pack/solutions/observability/plugins/observability/public/pages/alert_details/components/stale_alert.tsx
@@ -0,0 +1,153 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React, { useCallback, useMemo, useState } from 'react';
+import type { Rule } from '@kbn/triggers-actions-ui-plugin/public';
+import { ALERT_CASE_IDS, ALERT_STATUS_ACTIVE, ALERT_UUID } from '@kbn/rule-data-utils';
+import moment from 'moment';
+import { EuiButton, EuiCallOut, EuiFlexGroup } from '@elastic/eui';
+import { i18n } from '@kbn/i18n';
+import { RuleFormFlyout } from '@kbn/response-ops-rule-form/flyout';
+import { METRIC_TYPE, useUiTracker } from '@kbn/observability-shared-plugin/public';
+import { TopAlert } from '../../../typings/alerts';
+import { useKibana } from '../../../utils/kibana_react';
+import { useBulkUntrackAlerts } from '../hooks/use_bulk_untrack_alerts';
+
+function StaleAlert({
+  alert,
+  alertStatus,
+  rule,
+  refetchRule,
+  onUntrackAlert,
+}: {
+  alert: TopAlert;
+  alertStatus: string | undefined;
+  rule: Rule | undefined;
+  refetchRule: () => void;
+  onUntrackAlert: () => void;
+}) {
+  const { services } = useKibana();
+  const {
+    triggersActionsUi: { ruleTypeRegistry, actionTypeRegistry },
+  } = services;
+  const [ruleConditionsFlyoutOpen, setRuleConditionsFlyoutOpen] = useState<boolean>(false);
+  const { mutateAsync: untrackAlerts } = useBulkUntrackAlerts();
+  const trackEvent = useUiTracker();
+  const handleUntrackAlert = useCallback(async () => {
+    const alertUuid = alert?.fields[ALERT_UUID];
+    if (alertUuid) {
+      await untrackAlerts({
+        indices: ['.internal.alerts-observability.*'],
+        alertUuids: [alertUuid],
+      });
+      onUntrackAlert();
+    }
+  }, [alert?.fields, untrackAlerts, onUntrackAlert]);
+  const handleEditRuleDetails = () => {
+    setRuleConditionsFlyoutOpen(true);
+  };
+  const isAlertStale = useMemo(() => {
+    if (alertStatus === ALERT_STATUS_ACTIVE) {
+      const numOfCases = alert.fields[ALERT_CASE_IDS]?.length || 0;
+      const timestamp = alert.start;
+      const givenDate = moment(timestamp);
+      const now = moment();
+      const diffInDays = now.diff(givenDate, 'days');
+
+      // The heuristics to show the stale alert callout are:
+      // 1. The alert has been active for more than 5 days
+
+      if (diffInDays >= 5) {
+        trackEvent({
+          app: 'alerts',
+          metricType: METRIC_TYPE.LOADED,
+          metric: `alert_details_alert_stale_callout__ruleType_${rule?.ruleTypeId}`,
+        });
+        return {
+          isStale: true,
+          days: diffInDays,
+          cases: numOfCases,
+        };
+      }
+    } else {
+      return {
+        isStale: false,
+        days: 0,
+        cases: 0,
+      };
+    }
+  }, [alert.fields, alert.start, alertStatus, rule?.ruleTypeId, trackEvent]);
+
+  return (
+    <>
+      {isAlertStale?.isStale && (
+        <EuiCallOut
+          data-test-subj="o11yAlertDetailsAlertStaleCallout"
+          title={i18n.translate('xpack.observability.alertDetails.staleAlertCallout.title', {
+            defaultMessage: 'This alert may be stale',
+          })}
+          color="warning"
+          iconType="warning"
+        >
+          <p>
+            {i18n.translate('xpack.observability.alertDetails.staleAlertCallout.message', {
+              defaultMessage:
+                'This alert has been active for {numOfDays} days and is assigned to {numOfCases} {cases}.',
+              values: {
+                numOfDays: isAlertStale?.days,
+                numOfCases: isAlertStale?.cases,
+                cases: isAlertStale?.cases > 1 ? 'cases' : 'case',
+              },
+            })}
+          </p>
+          <EuiFlexGroup gutterSize="s" justifyContent="flexStart">
+            <EuiButton
+              data-test-subj="o11yAlertDetailsAlertStaleCalloutMarkAsUntrackedButton"
+              color="warning"
+              fill
+              iconType="eyeClosed"
+              onClick={handleUntrackAlert}
+            >
+              {i18n.translate(
+                'xpack.observability.alertDetails.alertStaleCallout.markAsUntrackedButton',
+                {
+                  defaultMessage: 'Untrack',
+                }
+              )}
+            </EuiButton>
+            <EuiButton
+              data-test-subj="o11yAlertDetailsAlertStaleCalloutEditRule"
+              color="warning"
+              iconType="pencil"
+              onClick={handleEditRuleDetails}
+            >
+              {i18n.translate('xpack.observability.alertDetails.alertStaleCallout.editRuleButton', {
+                defaultMessage: 'Edit rule',
+              })}
+            </EuiButton>
+          </EuiFlexGroup>
+        </EuiCallOut>
+      )}
+      {rule && ruleConditionsFlyoutOpen ? (
+        <RuleFormFlyout
+          plugins={{ ...services, ruleTypeRegistry, actionTypeRegistry }}
+          id={rule.id}
+          onCancel={() => {
+            setRuleConditionsFlyoutOpen(false);
+          }}
+          onSubmit={() => {
+            setRuleConditionsFlyoutOpen(false);
+            refetchRule();
+          }}
+        />
+      ) : null}
+    </>
+  );
+}
+
+// eslint-disable-next-line import/no-default-export
+export default StaleAlert;
diff --git a/x-pack/solutions/observability/plugins/observability_shared/typings/common.ts b/x-pack/solutions/observability/plugins/observability_shared/typings/common.ts
index 6e7340700259a..0f912833d44cf 100644
--- a/x-pack/solutions/observability/plugins/observability_shared/typings/common.ts
+++ b/x-pack/solutions/observability/plugins/observability_shared/typings/common.ts
@@ -12,6 +12,7 @@ export type ObservabilityApp =
   // we will remove uptime in future to replace to be replace by synthetics
   | 'uptime'
   | 'synthetics'
+  | 'alerts'
   | 'observability-overview'
   | 'ux'
   | 'fleet'