Kabul, Afghanistan ? A suicide car bomber attacked an American military convoy on the road to Kabul’s airport Saturday, killing a U.S. soldier and four Afghans and sending flames shooting into the sky, officials said.

Four Afghans were killed and 12 wounded, the Health Ministry said.

The attack was against U.S. troops responsible for training the Afghan military and police. Lt. Col. David Johnson, a U.S. spokesman, said one American soldier died in the blast and one was wounded.