A shooting at a Maryland mall has left at least three dead, including the suspected shooter, the Howard County Police Department said.The Mall in Columbia in Columbia Md., was put on lockdown after reports of a shooting this morning.It was unclear how many others might have been injured in the shooting and whether the shooter knew the victims.Elizabeth Braun told ABC News affiliate WMAR-TV in Baltimore that she was locked inside one of the stores with approximately 50 other shoppers during the incident.
