Chattanooga shooter failed a background test in May 2013

(AP) – An Ohio company says the man who gunned down four Marines in Tennessee failed a background check in May 2013.

Todd Schneider, a spokesman for FirstEnergy Corp., says Muhammad Abdulazeez was conditionally hired as an engineer at a nuclear plant in east Cleveland. He spent 10 days there before he was let go because he failed a background check.

He would not say why Abdulazeez didn’t pass the screening process. Abdulazeez underwent general training on company procedures, but his access was limited during his brief employment.

Schneider says he worked in an administrative building and was never allowed in the protected area of the plant near the reactor.

He says employees recognized a photo of Abdulazeez after the shooting and alerted company officials.