KABUL, May 26 (Reuters) - Three soldiers fighting with NATO-led forces and a civilian were killed by a suicide car bomb attack on a military convoy in east Afghanistan on Tuesday, Afghan officials and a spokesman for the alliance said.

One foreign soldier and one civilian were also injured when a suicide bomber rammed his explosive-laden car into the convoy in the northern Sayat district of Kapisa province, a spokesman for the provincial governor, Abdul Ali Mayar said.

NATO-led forces said the nationalities of the soldiers had not yet been released.

(Reporting by Hamid Shalizi and Golnar Motevalli; Editing by Emma Graham-Harrison and Paul Tait)