Abdul Khaleque, deputy assistant director of Rapid Action Battalion-1 (Rab-1), filed the cases -- one under the Arms Act and another under the Narcotics Control Act -- with Ramna Police Station on Monday, said its officer-in-charge Kazi Mainul Islam.
Samrat’s associate Anamul Haque Arman was also made accused in the narcotics case, he said.
On Sunday, Rab members arrested Samrat and Arman, also vice-president of Jubo League Dhaka South unit, from Chauddagram upazila in Cumilla.
A mobile court, led by Rab Executive Magistrate Sarwoer Alam, sentenced Samrat to six months’ simple imprisonment under the Wildlife Conservation Act after the elite force recovered two hides of kangaroo from his Kakrail office.
He was then sent to Dhaka Central Jail in Keraniganj on Sunday evening.
Arman was also sentenced to six months’ jail as he was found drunk when he was arrested. He was sent to Comilla Central Jail.