Security has been stepped up outside the Reserve Bank of India’s office in South Mumbai after it received a threat call on Saturday from a person claiming to be from Pakistan-based militant outfit Lashkar-e-Taiba.

The caller said he was the "CEO" of the Lashkar-e-Taiba terror group and sang a song over the phone before issuing the threat. Actors Shah Rukh Khan and Salman Khan also received extortion calls recently.

A hoax threat call was received by the customer care department of the Reserve Bank of India (RBI) in Maharashtra Mumbai, police said on Sunday.

RBI's customer care department in Mumbai received a fake call. The caller identified himself to be the CEO of the Pakistani terror group Lashkar-e-Taliban. The caller threatened to blow up the central bank with a bomb.

Taiba," contacted the RBI on Saturday around 10 am, demanding that a back road be blocked, claiming an electric car had broken down. The incident was quickly reported to Mumbai Police, who conducted a search but found nothing unusual.

The caller identified himself as the "CEO of Lashkar" and threatened to blow up the central bank with a bomb, the police said.

A bomb threat was received on the Reserve Bank of India (RBI)'s customer care number yesterday, during which the caller claimed to be the "CEO of Lashkar-e-Taiba", sources said.