Kevin D. Benjamin, 20, of Lexington Park, was taken into custody after assaulting and robbing his roommate.
The incident took place on Sunday as the victim and suspect were watching X-rated movies together.
The victim reportedly made a a suggestion to Benjamin that was sexual in nature, after which the suspect tied the victim’ hands with a lanyard and hit him in the face multiple times.
He then stole cash from the victim’s wallet and instructed the roommate to sleep in the attic.
Benjamin then threatened to kill the victim if he reported the incident, say police.
Benjamin has been taken to the St. Mary’s County Detention Center and is being held on $10,000 bond.
Additional charges are pending in the case.