An unidentified person called up a five-star hotel in Mumbai claiming bombs were kept at four locations there which he threatened to blow up and demanded Rs 5 crore to defuse them, the police said on Tuesday.
After the man's threat call on Monday, the hotel located in suburban Andheri was checked.
An official from Sahar police station said as per a preliminary probe, it seemed to be a mischief and a hoax call.
The hotel staffers later approached the Sahar police who registered an FIR against the unidentified caller under various Indian Penal Code sections including 385 (putting person in fear of injury in order to commit extortion), he said.
Multiple teams have been formed and efforts are on to nab the caller, he added.