Two US soldiers and a US civilian interpreter have been killed in Syria in an ambush by an Islamic State (IS) gunman, the US Central Command (Centcom) has said, BBC reported. 

Officials said three other service members were injured in the attack, during which the gunman was "engaged and killed". Syria's state news said two Syrian service personnel were also injured.

US President Donald Trump wrote on social media that it was "an ISIS attack" against the US and Syria and said there would be "a very serious retaliation". Syria's president sent condolences to Trump after the attack, according to BBC.