India, Oct. 24 -- Mayor Ritu Tawde's office received a cryptic threat email on Friday naming her office, Bollywood actor Amitabh Bachchan, singer-actor Diljit Dosanjh and several schools in the city as potential targets, which led the police checks that found nothing suspicious.

The email, received at the Brihanmumbai Municipal Corporation (BMC) office at around 11.30am, allegedly threatened to target schools at 1pm and the Mayor's office at 3pm on Friday. It also named Bachchan's Jalsa bungalow in Juhu, threatening an attack between October 31 and November 27, police officers said.

The email claimed to have been sent by an outfit calling itself the Khalistan National Army (KNA). Police suspect the name may be linked to the same group o...