"London thumakda" fame singer Labh Janjua was found dead at his residence in Goregaon (West) on Thursday morning, police said.
He was found dead in his bedroom when his maid came for her routine work.
Labh's body was taken to Cooper Hospital for post mortem and the police was investigating further as his sudden death raised several questions.
Labh Janjua sang for numerous Bollywood films like "Pyaar Ke Side Effects", "Dev.D", "Singh is Kinng", "Partner", "Queen" and "Garam Masala".
Labh also crooned for Akshay Kumar's latest release "Singh is Bliing".