Police were looking for additional victims or suspects and one man was taken into custody.
Police stated that the scene at Gateway Village National Church Residences was secured just before 11 AM and that there was no threat to the community.
The victims could not be immediately identified.
Initial police instructions to residents were to stay put. As a precaution, the nearby Capitol Heights Elementary School was placed on lockdown. However, it has been lifted.
Capitol Heights, a small town of approximately 4,500 people, has its own police force but works closely with Prince George's on major incidents. Just north of the apartment building, you will find a Prince George's County Fire Station and a Post Office.
Police asked the families of the victims to meet outside the firehouse at 6061 Old Central Avenue.