NEW : A restaurant worker injured in the shooting may be paralyzed , state media say . Russia 's Investigative Committee , which is probing the attack , said the killer had used a VAL assault rifle fitted with a silencer . Investigators are hunting for the assassin of a reputed Russian mafia kingpin . Aslan Usoyan , also known as Granddad Khassan , was shot at a restaurant , authorities say . The gunman fled and is still on the run.
NEW : A restaurant worker injured in the shooting may be paralyzed , state media say . Investigators are hunting for the assassin of a reputed Russian mafia kingpin . Aslan Usoyan , also known as Granddad Khassan , was shot at a restaurant , authorities say . The gunman fled and is still on the run.