Two U.S. soldiers and one civilian U.S. interpreter were killed in Syria Saturday after they were ambushed by a likely ISIS gunman, U.S. officials said.

The gunman was killed by “partner forces” during a skirmish, according to Defense Secretary Pete Hegseth.

Three other service members were injured during the incident in Palmyra, Syria, Pentagon spokesman Sean Parnell said in a statement. Two U.S. officials said the wounded were American.

This is a developing story. Please check back for updates.