Mumbai and Navi Mumbai authorities activated heightened security measures on October 23, 2026, after threatening emails referring to a possible attack were received and specifically mentioned high-profile public figures including actor Amitabh Bachchan and singer-actor Diljit Dosanjh, along with a warning addressed to the Deputy Mayor’s office in Mumbai. Police sources told reporters the communications prompted immediate alerts and safety checks at the named locations, and investigations were opened to trace the sender(s).

What happened and when

On October 23, 2026, municipal officials and law-enforcement agencies in Mumbai and neighbouring Navi Mumbai began responding to a set of threatening emails that were circulated to local government offices and referenced planned threats against public figures. Local reporting identified the Deputy Mayor (cited by name in some outlets) as a recipient of the message; the same email thread allegedly named Amitabh Bachchan and Diljit Dosanjh.

Police in the affected jurisdictions were reported to have treated the messages as credible enough to trigger precautionary steps. These included a review of security arrangements at locations connected to the named individuals and increased patrols near venues where the celebrities were expected to appear. Authorities also said they had launched digital-forensic inquiries to determine the origin of the emails and whether they were part of a wider campaign of threats.

Who is involved

  • Amitabh Bachchan, veteran Bollywood actor and a frequent target of public attention because of his stature and upcoming public engagements.
  • Diljit Dosanjh, singer-actor with recent and scheduled public appearances; named in the emails according to local reporting.
  • Mumbai municipal office, the Deputy Mayor’s office was specifically mentioned in the communications and received one of the emails, triggering a local security response.
  • Mumbai and Navi Mumbai police, law-enforcement agencies leading the inquiry and coordinating protective measures.

Why it matters

The emails represent a direct security concern for well-known public figures in India’s entertainment sphere and for municipal officials responsible for local governance. Even when threats arrive by email rather than in person, they require immediate assessment because they can be precursors to copycat actions or intended to cause disruption, fear or reputational harm. High-profile incidents, especially those referencing widely recognised celebrities, also carry potential to disrupt scheduled events and promotional activities, and to create broader public unease.

Immediate responses and next steps

Authorities have said they are conducting digital-forensics to trace the email source, checking whether any IP addresses, domains or message headers point to known threat actors or to foreign or domestic origins. Police also reported augmenting security at likely venues and advising organisers of public events involving the named celebrities to review safety protocols.

Investigators are pursuing standard lines of inquiry: verifying whether the emails were sent from genuine accounts or spoofed addresses, checking for corroborating intelligence about planned activity, and seeking CCTV or other physical leads in locations mentioned in the messages. If the messages are found to be deliberately malicious hoaxes, authorities may nonetheless press charges under applicable criminal statutes for causing public alarm and for cyber-enabled threats.

Context: a wider climate of threats and caution

In recent weeks and months, India has seen several high-profile security incidents and heightened public-safety sensitivity around large gatherings and celebrity appearances. Threats by email or social media often prompt rapid policing responses because of the potential consequences if warnings are not treated seriously. The current probe aligns with that posture: even unverified communications can become security liabilities if they lead to crowded events being left unguarded.

Confirmed facts and sources

This report is based on contemporaneous reporting from Indian news outlets which published and updated accounts on October 23, 2026. Those reports record that the emails were received by municipal officials and referenced Amitabh Bachchan and Diljit Dosanjh, and that police in Mumbai and Navi Mumbai initiated an inquiry and raised security measures following receipt of the messages.

Police statements and official updates are expected to follow as investigators complete forensic work and determine whether arrests or public advisories are required. Editors will monitor developments and publish confirmed updates from law enforcement and representatives for the named individuals.