Damascus, Nov 9 : US forces struck positions in Syria's eastern province of Deir al-Zour after midnight Thursday, according to Syria's pro-government Sham FM radio and the Pentagon. US forces struck the vicinity of Bor Saeed Street, east of the city of Deir al-Zour, said the report, noting that the attack caused powerful explosions, Xinhua news agency reported. Meanwhile, the Syrian Observatory for Human Rights war monitor said warplanes hit military sites and a weapons depot in the vicinity of Bor Saeed Street. The Sham FM radio also reported powerful explosions at the al-Omar oil field, where a US base is located, in the eastern countryside of Deir al-Zour. Meanwhile, the Pentagon confirmed that it was a US-led airstrike in Deir al-Zour, saying in a statement that US military conducted "self-defense airstrikes" on a facility in eastern Syria in response to attacks against US personnel in Iraq and Syria by Iranian-backed IRGC-Quds Force affiliates. There was no information on losses yet. The current incidents seemed to be as part of the recently escalating exchange of fire between pro-Iran fighters and the US forces in Deir al-Zour, reports said. The escalation comes on the heels of the Israeli-Hamas conflict in the Gaza Strip, as pro-Iran fighters in Syria deem the US responsible for the escalation in Gaza, according to the reports. /IANS