(CNN) -- A gunman strapped with large amounts of ammunition Saturday shot and killed two workers at a busy Columbia, Maryland, mall before turning a shotgun on himself, police said.
The shooting, which also left five others injured, capped a violent week which saw shootings or gun scares at American schools or shopping centers -- ordinary places where people once felt safe.
"This should not happen at the Columbia Mall," Howard County Police Chief Bill McMahon told reporters. "This shouldn't happen anywhere."
McMahon told reporters that the shooter apparently fatally shot a man and woman -- both store employees -- before shooting himself in a store on the second floor of The Mall in Columbia. The motive was unclear.
Police identified the dead employees as Brianna Benlolo, 21, of College Park, and Tyler Johnson, 25, of Ellicott City. Both worked at Zumiez, a shop that caters to skaters, where the shootings took place.
The body of the unidentified suspected shooter was found near a shotgun on the floor of Zumiez, police said. A large amount of ammunition was found near the body, leading investigators to suspect that he might be carrying explosives.
The first 911 call about the shooting came at about 11:15 a.m. and officers were in the mall within two minutes, police said.