A critically wounded male walked into a Northwest recreation center Thursday night after suffering what are believed to be serious stab wounds, D.C. police said.

Police were called the 1400 block of 7th Street about 7:15 p.m., soon after the wounded man arrived seeking help, said Officer Hugh Carew, a spokesman. Callers told police the man may have been stabbed, and the victim was taken to a hospital with critical injuries.

Homicide detectives were called to the scene, but police were not immediately clear where or why the man was wounded.

Clarence Williams is the night police reporter for The Washington Post and has spent the better part of 13 years standing next to crime scene tape, riding in police cars or waking officials in the middle of night to gather information about breaking news in and around Washington.