A member of the U.S. air force has been taken into custody in connection with an April attack in Syria that wounded four fellow service members, the Air Force said on Tuesday.
The U.S. military initially blamed the attack in Green Village in eastern Syria on indirect fire, possibly a rocket strike.
It later said further investigation showed the blasts were the result of "deliberate placement of explosive charges" at an ammunition holding area and shower facility, and officials said they were looking into the possibility of an insider attack.
