Yep you're correct. And I've checked a few times to see if he's still detained. I didn't say this before because I didn't want this to sound like a sensationalized BS story. However we did find out he was in jail for murder already. It was apparently his own friend.
The emoyee who was robbed got a bit freaked out from that since the perp told him he'd kill him if he called the police. WHOOPS.
The perps name is John thomas Logan of anyone cares to go to Maryland case search to see his rap sheet.