(CNN) -- A senior officer who was playing golf Thursday near Fort Hood, Texas, told CNN he witnessed the arrest of one of the two surviving suspects of the shooting at the Army installation.
Shortly after the shooting, the officer said, military police told him to clear the course and he saw other MPs surround the building that held the golf carts, he said.
The senior officer said he ducked into a nearby house for cover as 30 to 40 cars carrying MPs approached.
He said he saw a soldier in battle-dress uniform, his hands in the air. The MPs ordered him to lie on the ground and open his uniform, presumably to ensure he was not carrying explosives, the senior officer said.
He said an MP told him that authorities considered the man to be a suspect in the shootings after having overheard the man say he was with the shooter.
The man was surrounded for 25 to 30 minutes, until a convoy of vehicles arrived, led by a Ford Crown Victoria and carrying men in suits, and he was taken away, the senior officer said.
The golf course is about 2.5 miles from Fort Hood, the officer told CNN.
CNN's Kay Jones contributed to this story