Two Swedish army officers and a local interpreter were killed Sunday in a firefight in northern Afghanistan, Sweden's military command said in Stockholm, dpa reported.

The command said a further Swedish soldier was wounded when the patrol was attacked by small-arms fire in Mazar-e-Shariff. He was taken to a field hospital run by German military forces.

Previously, the international security forces ISAF in Kabul had reported the deaths of two ISAF soldiers in a small-arms fire attack, but in keeping with its policy had not divulged the nationality of the victims.

Sweden has kept some 500 soldiers in Afghanistan since 2004. Prior to Sunday, the country had lost two soldiers in the Afghan conflict.