Story highlights Syrian Observatory for Human Rights also says regime plane crashed

ISIS posts video purporting to show plane's flaming wreckage

Terrorist group says it has taken the pilot hostage

(CNN) ISIS claims it shot down a Syrian air force jet east of Damascus on Friday and captured the pilot, according to Amaq, the media agency affiliated with the terrorist group.

The claim appeared to be at least partially corroborated by the London-based Syrian Observatory for Human Rights, which is opposed to both ISIS and the Syrian regime.

The Observatory said a Syrian warplane had crashed in Dakwa, southeast of Damascus. But it said it had no information on whether the crash was due to an attack or a technical failure, nor on the fate of the crew.

ISIS published a video claiming to show the flaming wreckage of the jet, with what appears to be a Syrian flag painted on the wing. CNN cannot confirm the authenticity of the video.

The terrorist group also published the purported name of the pilot, and said he was born in the city of Hama.

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