U.S. offers sympathies to victims of bus attack
Syrian official: Strike was 'a pure act of savagery'
Health workers carry the body of one of five Syrians killed on a bus that was hit by a U.S. missile.
DAMASCUS, Syria (CNN) -- Five Syrians were killed during a U.S. missile strike on a bridge in northwestern Iraq on Monday.
Syrian officials said the dead were among 37 passengers on a bus that was hit by a U.S. missile Monday about 100 miles [160 kilometers] south of the Iraq-Syrian border. At least 15 passengers were reported injured.
At the Pentagon, Maj. Gen. Stanley McChrystal said the raid's intended target was a bridge, and that the bus came into view only after ordnance had been released.
"Unintended casualties like this are regrettable," McChrystal said. "We extend our sympathies to the families of those civilians who were accidentally killed."
The bus was filled with passengers trying to flee Iraq and the war.
"This is a pure act of savagery, an outrageous and unjustifiable attack on innocent civilians," a Syrian government official said.
The Syrian government told CNN that there were no "justifiable targets" in the area where the bus was hit.
The dead and the injured have been taken to Syria.
-- CNN's Juliette Terzieff contributed to this report.