Seven people have been killed after air strikes destroyed a convoy of trucks carrying arms into eastern Syria from Iraq, a war monitor said.

The seven were "truck drivers and their assistants, all of them non-Syrians", the Syrian Observatory for Human Rights said, adding that they were "killed as a result of unidentified aircraft targeting a convoy of Iran-backed groups, last night".

The strikes destroyed a convoy of six refrigerated trucks transporting Iranian weapons in the Albu Kamal border region, the Observatory, which has a wide network of sources inside Syria, had said on Sunday.