Thane: Four inmates of the Adharwadi jail at Kalyan were booked for allegedly possessing a cell phone, police said today.

Police constable at Bazarpeth peth police station A G Chavan said, according to the complaint lodged by jail personnel Sumanta Rajput, a cell phone was recovered from room no 22 of circle no. 6 in the jail from possession of an inmate Rupesh Jirale, while he was on duty.