United States boarder patrol agents shot and wounded a Canadian man on the Ambassador Bridge between Detroit and Windsor, Ontario.

The man had stopped his car on the Ambassador Bridge, exited, and walked towards an inspection point waiving a handgun at around 3 a.m. Sunday morning.  He was on the U.S. side of the bridge.

Kris Grogan, a spokesperson for U.S. Customs and Border Protection, said agents requested the man drop the gun but the man did not comply.  Officers then shot and wounded the man.  He was treated for his injuries at a hospital and then taken to jail.

According to Grogan the man "is a citizen of Canada and has had previous encounters with Canadian law enforcement."

An investigation of the incident is taking place.  The Department of Homeland Security's Office of the Inspector General, U.S. Customs and Border Protections Office of Internal Affairs and the Detroit police are all investigating.