After users in Turkey reported problems using social media in the wake of the release of the video, Deputy Prime Minister Numan Kurtulmus said it was essential that internet-based media showed responsibility in the face of "vile" terror groups.
Turkey has for four months pressed an incursion against IS jihadists inside Syria in support of pro-Ankara fighters. But they have faced stiffening resistance in the battle to take the Syrian town of Al Bab, taking increasing casualties.
"There is still no clear information from our armed forces or defence ministry to confirm these video images," Kurtulmus told reporters in Ankara in televised comments.
"If there is confirmed information, it will be shared with the public," he said.
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But Kurtulmus added that terror groups were "vile mechanisms" and were seeking to "spread desperation" through fear.
"In particular social media is not the place for irresponsible publications," he said. "Turkey is at the moment in a de-facto war with Daesh (IS)," he added.
Users in Turkey had reported severe problems with social media after the video emerged and the Turkey Blocks monitoring network said it had confirmed a "throttling" of Twitter and YouTube affecting many users.
It said the blocks appeared to have been implemented at the Internet Service Provider (ISP) level, "with each provider applying its own controls".
However, by yesterday access to Twitter was fully restored after some three days of disruption.
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