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(CNN) — If you blink during the video, you might miss the moment Jonah’s tomb in Mosul, Iraq, explodes.

The first few frames show the revered shrine towering over its landscape. There’s a sudden burst of dust, fire and smoke.

Then, nothing.

CNN could not immediately confirm the authenticity of the video, which was posted to YouTube.

The holy site is thought to be the burial place of the prophet Jonah, who was swallowed by a whale or fish in both the Islamic and Judeo-Christian traditions.

Militants belonging to the Islamic State in Iraq and Syria, or ISIS, planted explosives around the tomb and detonated the explosion remotely Thursday, civil defense officials there told CNN.

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The tomb was inside a Sunni mosque called the Mosque of the Prophet Younis.

ISIS is waging war against the Iraqi government and has taken over several cities. It is seeking to create an Islamic caliphate that encompasses parts of Iraq and Syria and has begun imposing Sharia law in the towns it controls.

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