The elite police unit already face similar charges in Narayanganj and Comilla.
Personnel of RAB-14 ,including its commanding officer (CO), have been dragged to the Brahmanbaria district court on Sunday by Mehedi Hasan , who says his brother , businessman Shahnur Alam, was killed by them.
His dead body was found on May 6.
Hasan mentions RAB-14 Bhairab camp commander Major AZM Sakib Siddiki and Sub Inspector (SI) Md Enamul Haque as responsible for the murder of his brother.
Other accused are nine unnamed RAB personnel and Nazrul Islam,58, and Abu Taher Mia,45, who hail from Krishnanagar of Nabinagar.
Recently, a murder case was also filed against RAB in Laksam upazila of Comilla for abducting two BNP leaders.
Earlier, three RAB officers had been arrested for murdering seven people in Narayanganj
These incidents have fuelled a public outcry against the RAB with many , including BNP chairperson Khaleda Zia, demanding the force should be disbanded -- but Prime Minister Sheikh Hasina has ruled that out.