(CNN) — An active-duty Army sergeant was taken into custody Wednesday on suspicion of opening fire at his workplace on the sprawling Fort Stewart military base in Georgia , wounding five of his fellow soldiers, authorities said.

The suspect, identified as Sgt. Quornelius Samentrio Radford, 28, was subdued by nearby soldiers after he began shooting with a personal handgun, striking coworkers, according to Brig. Gen. John Lubas, the commanding general of the 3rd Infantry Division.

All five soldiers are in stable condition, Lubas said at a news conference Wednesday. Radford’s motive is not known.

The shooting is among at least 262 mass shootings in the US so far this year, according to the Gun Violence Archive. It comes within days of shootings at a Midtown Manhattan skyscraper and

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