The man shot to death Friday at the old Walter Reed Army Medical Center was identified early Saturday by D.C. police as a 45-year-old resident of Northwest Washington.

They said Brian Andrew Gibson ,who has been described as the driver of a shuttle bus, died in the incident. He was killed about 8 a.m. in the 6900 block of Georgia Avenue NW during a dispute with another driver of a shuttle bus, according to police.

Police said Koonce Wright, 59, of Silver Spring, was arrested later and charged with second degree murder.

According to police the shuttle bus drivers involved in the dispute were transporting construction workers to the site on Georgia Avenue.

A police statement issued early Saturday did not describe the dispute.