Maryland-National Capital Park Police discharged a weapon during a response Friday night to an active shooter in Fort Washington Park, authorities said. What we know:Police responded to a call for an active shooter at the park around 6:15 p.m.Once on the scene, a person pulled out a handgun, police said. An officer then discharged their weapon. The investigation is active and ongoing, with multiple FOX 5 DC viewers reporting a large police presence in the area around 10 p.m. This report will be updated as more information becomes available.