Story highlights One of the fatalities was Joseph Lemm, a New York City police officer and National Guardsman

Suicide bomber carries out attack on a joint Afghan/NATO patrol, spokesman says

Two other U.S. service members and an American contractor were wounded

(CNN) All six of the NATO service members killed Monday in a motorcycle bomb attack in Bagram, Afghanistan, were American, U.S. Defense Secretary Ash Carter said.

A suicide bomber on a motorbike carried out the attack on a joint patrol of Afghan and coalition forces at about 1:30 p.m. in the Bajawri area of Bagram district, said Waheed Sediqi, a spokesman for the governor of Parwan province.

Two other U.S. service members and an American contractor were also wounded, officials said.

The area is close to the U.S. base in the Bagram district of northern Parwan province.

Carter expressed his condolences to the Americans' families.

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