The gunman involved has been killed, with no information on motives as of yet.

Syrian security forces and United States troops have come under fire during a joint field patrol near Palmyra, in the central Homs region, leaving two Syrian personnel and several US service members wounded, the official Syrian Arab News Agency (SANA) state news agency reported.

The gunman involved was killed in the incident on Saturday, with no further details regarding the motive or circumstances, SANA reported.

Traffic on the Deir Ezzor–Damascus highway was temporarily halted as military aircraft conducted overflights in the area, the agency said.

A security source told SANA that US helicopters evacuated those who were wounded to the al-Tanf base.