Sonu_NigamMumbai, Oct 3 (PTI) Bollywood playback singer Sonu Nigam has been allegedly threatened by the underworld to cancel his deal with an event management company and sign up with another, purportedly chosen by them, police said today.

The 40-year-old singer has informed the city police that he has been receiving a number of threatening phone calls and text messages from Chhota Shakeel, a close aide of underworld don Dawood Ibrahim, for the past few days.