Isis fighters claim to have captured the pilot of a Syrian warplane which crashed in the southeast of Damascus on Friday, a news agency affiliated with the group reports.
"The pilot, called Azzam Eid, from Hama was captured after he fell by parachute near the site where his plane crashed east of Damascus," the news agency Amaq said.
Citing a Syrian military source, Russian news agency Interfax said the plane belonged to the Syrian Air Force and crashed because of a technical fault.
"The plane had recently undergone repairs... there was no attack from the ground. It crashed because of a technical fault. The pilot ejected," Interfax quoted the source as saying.
Earlier, another Islamic group in the areas, Jaysh al-Islam, said the plane had crashed near the town of Bir al-Qasb due to a technical fault shortly after it left the Dumayr air base.
But a video shared online by Amaq claimed the plane was shot down by Isis.
The footage shows Isis fighters around burning plane wreckage - which had a Syrian flag painted on it.
The video has not been independently verified.
Isis said the plane had been shot down earlier on Friday but did not specifically claim responsibility.
Additional reporting by Reuters