A video has emerged on social media of the moment when a police officer in Mexico is set on fire as he addresses some protesters.
In the 20-second clip, the officer is standing next to his motorbike as he talks to some protesters. He has several colleagues behind him as he appears to be addressing one protester in particular.
But as he turns away from the crowd, one of the protesters throws a clear liquid from a plastic bottle onto his back before setting light to the officer.
The officer quickly drops his bike and falls to the ground as he rolls over repeatedly to try and extinguish the flames.
His colleagues rush to his aid as some of the protesters move forward towards the police.
The officer is moved back behind his colleagues as they continue to try and put out the flames. The video then stops.
The condition of the officer is not known.
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