Three people were killed shortly after 11 am on the second floor of a crowded Mall in Columbia, according to Howard County police. One of those who was found near a gun and ammunition is believed to be the shooter.

Police report the area is now secure.

"We are confident it was a single shooter," said Howard County Police Chief William J. McMahon, who spoke at the mall. McMahon told the Baltimore Sun he could not say yet whether the incident was the result of a dispute between people who knew each or a random act of violence.