Police released video Wednesday of persons they're trying to identify in connection with an Oxford Circle home invasion earlier this month.On March 18 at 7:02 p.m., a couple parked behind their residence on the 1400 block of McKinley Street heard someone yell "don't move or I'll shoot you." Police said six of seven males – one of them holding a gun – then forced the couple inside and demanded money.The gunman hit one of the victims on the head with the weapon repeatedly, while the other victim gave the robbers money and jewelry.The males then ran to the rear driveway and east towards Large Street with approximately $30,000 in cash, jewelry and the victim's handgun.Police said most of the robbers were described only as black males wearing blue or black hoodies and holding rags over their faces, while one of them was wearing a white hoodie.If you have any information about this crime or these suspects, police said they want to hear from you. Do not approach them but call 911 immediately. To submit a tip, call 215-686-TIPS (8477) or use this electronic form to submit a tip anonymously.