ISTANBUL

US President Donald Trump on Saturday vowed to respond to an alleged ISIS (Daesh) attack in Syria that left two US service members and a US civilian dead and three service members wounded.

"We will respond to the attack on our forces by ISIS," Trump said, adding: "We will respond if American forces are attacked again."

Earlier, the US Central Command (CENTCOM) said two US troops and a civilian were killed and three other service members injured in an ambush carried out by an ISIS gunman in Syria.

“The gunman was engaged and killed,” it added.