Dhaka Metropolitan Magistrate Tofazzal Hossain placed him on a 5-day remand in an anti-narcotics case and an arms case each.
The court also put Enamul Haq Arman, vice-president of Jubo League Dhaka South unit, on a 5-day remand in the anti-narcotics case.
More than 20 lawyers stood for Samrat while Public Prosecutor Md Abdullah Abu represented the state.
Samrat was taken to Keraniganj central jail on Saturday after he was discharged from the National Institute of Cardiovascular Diseases.
On Tuesday last, the authorities of Keraniganj jail took Samrat to Dhaka Medical College Hospital after he complained of chest pain.
Rab members arrested Samrat and Arman from Chauddagram upazila in Cumilla on October 6.
A mobile court, led by Rab Executive Magistrate SarwarAlam, 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 that day.