Anuj Thapan, was arrested after his name cropped up during the Mumbai Crime Branch investigations in firing at the residence of Bollywood actor Salman Khan

He allegedly attempted suicide in the lock-up of Mumbai Police's crime branch on Wednesday and was declared dead at a hospital where he was rushed to, an official said

Anuj Thapan, 23, hanged himself inside the toilet of the lock-up using a bedsheet, official sources said on Wednesday

He was rushed to the state-run GT Hospital, where he was declared dead during treatment, an official said

An accidental death report will be registered at Azad Maidan police station in south Mumbai, sources said

Thapan was arrested from Punjab along with Sonu Kumar Bishnoi for allegedly supplying weapons to shooters Sagar Pal and Vicky Gupta, who were already arrested, according to police