The investigation into Baltimore Ravens running back Ray Rice and fiancee Janay Palmer's after-hours altercation inside Revel Resorts has been kicked up to the Atlantic County prosecutor, following the release of security video showing Rice dragging a limp woman out of an elevator.

Rice and Palmer were arrested by Atlantic City police shortly before 3 a.m. Feb. 15 at the porte-cochère of the Boardwalk casino. Both were charged with simple assault-domestic violence.

Police at the time said both had struck the other and neither had reported injuries or required medical treatment. The video, posted on TMZ Sports website Wednesday and shown below, shows Rice dragging what looks like an unconcious Palmer out of an elevator face down. UPDATE: A police complaint summons, posted online Wednesday by the Baltimore CBS TV station, says Rice stuck his fiance with his hand "rendering her unconscious." 

  Rice and Palmer were due back in Atlantic City Municipal Court on Tuesday for a hearing. But Wednesday afternoon, the Atlantic County Prosecutor's Office issued a statement saying the city police had requested its involvement.

"The domestic violence incident in Atlantic City invovling Ray Rice has been referred to the Atlantic County Prosecutor's Office for review. ... to ensure all appropriate charges are considered," it said in a statement.

Rice remains charged with simple assault, a disorderly persons offense.

The Baltimore Sun, meanwhile, reported that the NFL would investigate the incident, as well. The Ravens issued a statement calling the matter "serious" and said they would seek further information.