A 43-year-old man who allegedly threatened relatives with a meat cleaver before barricading himself in his Southeast house last night for about three hours was subdued by police after attempts to talk the man out failed, D.C. police said.

Police spokesman Joe Gentile said Isiah Robinson of 2327 Nash Place SE was taken to D.C. General Hospital for mental observation and for treatment of minor lacerations after grappling with police officers shortly before 10 p.m.

Gentile said 6th District officers had responded to the Nash Place address about 7 p.m. following a report that a man had barricaded himself after threatening his mother and brother and chasing them out of the house.

Emergency response team officers entered the house after they could not persuade Robinson to come out peacefully, Gentile said. He said that once inside, the officers determined that Robinson was acting in an incoherent manner, and tear gas was fired into the house about 9:45 p.m.

A struggle ensued, Gentile said, when Robinson tried to flee through the front door as more officers were coming into the house.

One unidentified officer was treated on the scene for hand cuts suffered during the struggle, Gentile said.

Gentile said that no charges were filed, and that Robinson's mother and brother, who were not identified, were not harmed. It was not known last night if the meat cleaver or other weapons were found at the scene, Gentile said.