PHILADELPHIA (AP) — A man wearing a Brink's armored car shirt was nabbed inside a company facility Thursday as he tried to make off with a bag that had $640,000 inside, police said.

The man, 33, got through a gated area at the Brink's facility in Southwest Philadelphia shortly after 7 a.m. and grabbed the cash, police said. Guards caught him as he tried to run, police said. He was in custody Thursday afternoon.

It was not clear whether the man is a Brink's employee or just posing as one, a police spokeswoman said.