Reuters news agency has been told by the official of a Syrian rebel group that one of the pilots is in fact dead.

Earlier we mentioned a video and Reuters says that you can hear a voice says "a Russian pilot" and another saying: "God is great".

The group, operating in north-west Syria, sent the footage to the news agency and operate in the same area as the Free Syrian Army and other groups.

The whereabouts or condition of the second pilot are unknown and the official made no comment on what may happened to the pilot.