A New York City police detective is one of six American troops killed in a suicide attack near Bagram Airfield in Afghanistan.

Police Commissioner William Bratton on Monday says Detective Joseph Lemm was a 15-year veteran of the New York Police Department and worked in the Bronx Warrant Squad.

Bratton says Lemm served in the U.S. National Guard and, while a member of the police force, he had been deployed twice to Afghanistan and once to Iraq. He leaves behind a wife and three children.

The troops were killed Monday when an attacker rammed an explosives-laden motorcycle into their patrol in a village near the airfield. Two others were wounded along with an Afghan.

The Taliban has claimed responsibility.