Two of the main rebel groups receiving weapons from the United States to fight both the regime and jihadist groups in Syria have surrendered to al-Qaeda, reports the British newspaper Telegraph.

The US and its allies were relying on Harakat Hazm and the Syrian Revolutionary Front (SRF) to become part of a ground force that would attack the Islamic State (aka ISIS).

For the last six months the Harakat Hazm, and the SRF through them, had been receiving heavy weapons from the US-led coalition, including GRAD rockets and TOW anti-tank missiles, according to the report.

But on Saturday night, Harakat Hazm “surrendered military bases and weapons supplies to Jabhat al-Nusra, when the al-Qaeda affiliate in Syria stormed villages they controlled in northern Idlib province.”

The development came “a day after Jabhat al-Nusra dealt a final blow to the SRF, storming and capturing Deir Sinbal, home town of the group’s leader Jamal Marouf,” said the Telegraph.