 A U.S. Park Police officer is recovering in the hospital, and another person has died after an exchange of gunfire Wednesday afternoon in Northwest Washington, D.C., authorities said.U.S. Park Police spokesperson Sargent Thomas Twin Ames said the incident began as what was called a drug violation in the area of 12th Street and Massachusetts Street N.W. at around 2.30 p.m. Multiple Park Police officers were at the scene, near a park area, under its jurisdiction, the department said. Twin Ames said gunfire was exchanged between a single officer and the suspect after the person fled police officers on foot, authorities said that both were transported to a local hospital in critical condition. Where the suspect, they were attempting to apprehend died, the investigation into the shooting incident is still ongoing, and the area remains blocked off by police officials say there is no further threat to the public. The 1,100 block of M Street, N.W., between 11th and 12th Streets, is closed due to police activity, according to the Metropolitan Police Department.