The Army sergeant accused of shooting five soldiers at a Georgia military base was a “hard worker” who was previously bullied over a speech impediment, co-workers said, according to a report. Sgt. Quornelius Radford,

Sgt. Quornelius Radford's father said he hadn't noticed anything unusual but his son was seeking a transfer and complained of racism at Fort Stewart.

Of the five wounded soldiers, three were released from the hospital, one remains hospitalized at Fort Stewart, while the final soldier is at a Savannah, Georgia, hospital, officials said. It is still an active investigation. Update 7:02 a.m. ET Aug. 6: The alleged gunman was identified as Sgt. Quornelius Radford, 28, The Associated Press reported.