MADISON, Wis. -

A high school classmate recognized a man suspected of robbing a Madison credit union leading to an arrest, according to Madison police.

Police said a witness to the robbery of the Summit Credit Union at 1799 Thierer Rd. Tuesday recognized Brandon P. Stull, 21, of Madison, as someone the witness went to high school with. Police said the witness didn't know the man's name but was able to point out his photo in a high school yearbook.

Stull was arrested at his home without incident, according to police.

Police are looking for Justin A. Harlow, 19, who they believe is also connected to the credit union robbery. He has lived in Sun Prairie in the past, according to police.

Anyone with information on Harlow's whereabouts is asked to call 911 or Madison Area Crime Stoppers at 608-266-6014.