Atlanta Police Chief Darin Schierbaum says a fire destroyed eight Atlanta police motorcycles and was one of several recent acts of vandalism by a group aiming to stop construction of a new public safety training center. Schierbaum spoke at a news conference Wednesday with Atlanta Mayor Andre Dickens.

Over six months, the Atlanta-based group bought hundreds of firearms from local retailers only to resell them to Philadelphia-based brokers. Now the weapons are showing up at crime scenes.