The Pentagon said the United States has carried out another raid against Al-Qaeda militants in Syria, on the heels of a strike that killed the spokesman of the group’s Syrian branch.

The Pentagon said the United States has carried out another raid against Al-Qaeda militants in Syria, on the heels of a strike that killed the spokesman of the group's Syrian branch.

"I can confirm that the US struck a vehicle killing several Al-Qaeda militants," said spokesman Matthew Allen. "The results of this strike are still being assessed."

The latest strike was carried out in northwestern Syria, according to a Defense department official who asked not to be named.

The Washington Post reported the latest raid was late Tuesday.

On Monday, the Pentagon said the US military conducted an air raid on an Al-Nusra meeting in northwest Syria the previous day.

Al-Qaeda's Syrian affiliate confirmed on Wednesday the death of its spokesman Abu Firas al-Suri in a US air strike.

News of the strikes came as talks in Geneva aimed at ending the conflict loomed on April 11.

The UN has said the upcoming round of talks will focus on plans for a political transition to lead Syria out of five years of brutal civil war.