IDF Chief of Staff Gadi Eisenkot on Thursday ordered military police to investigate how apparently army-issue rifles were brandished by Jewish far-right participants at a wedding as they celebrated the murder of Palestinians.

Eisenkot told military police to find out how the weapons came to show up in the video and if any IDF soldiers took part in the event.

Revelers in the video can be seen waving knives, rifles, pistols and a Molotov cocktail. At least two of the rifles appear to be of the type issued to IDF combat troops.

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Amid the festivities, a photo of the Palestinian baby Ali Dawabsha, who was burned to death along with his parents in a July 31 firebombing in the West Bank village of Duma, is shown being repeatedly stabbed.

The video, published by Channel 10 news on Wednesday, drew condemnations across the political spectrum, though some right-wing lawmakers accused security officials of leaking the video to demonize Jewish extremists being investigated over the killing of the Dawabshas.

Israel Police spokesperson Luba Samri said police had begun looking into the video on Wednesday afternoon before it was screened on TV.

Samri said the video shown on TV was only a small part of the material police are investigating.

Both opposition leader Isaac Herzog and Prime Minister Benjamin Netanyahu condemned the images and the elements behind them. Netanyahu called the video “shocking,” while Herzog termed the revelers “lowlifes.”

The suspected existence of a Jewish terror network has made headlines recently as the Shin Bet’s investigation of the Duma attack progressed. The developing case has caused tension within the Israeli right, between those who see Jewish terrorism as a grave threat and those who deny its existence or seriousness.