Three people were arrested on Tuesday allegedly with 1,000 gelatin sticks and an equal number of detonators in Bhiwandi in Thane district, police said. Acting on a tip off, a car was stopped at Nadi Naka at 3pm and the seizure was made from Alpesh @ Balya Hiraji Patil (34), Pankaj Acchelal Chouhan (23) and Sameer @ Samya Ramchandra Vedga (27), all residents of Vikramgad in neighbouring Palghar district, an official said.