A police officer has been injured following large scale disorder in Auchinleck on Saturday night.
Footage posted to social media shows fireworks being thrown at officers lined up in the village.
Officers were dressed with helmets and riot shields, with police vans also in attendance.
Detective inspector Louise White of Ayrshire Division said: "An investigation is underway following an incident of large-scale disorder in Auchinleck on Saturday, 25 November. Officers were called to reports of a crowd gathered in Old Avenue.
“The crowd moved to other addresses in the area and public order officers attended to assist when the crowd refused to disperse when requested. Unfortunately during the incident some of those gathered became extremely hostile towards the police and one officer was struck by a firework and taken to hospital for treatment.
“Police Officers have a duty to ensure the safety of everyone involved such incidents but this kind of behaviour is completely unacceptable.
“Although the crowd later dispersed our investigation is ongoing to trace those responsible and ensure they are dealt with appropriately. This will include reviewing any available video footage”
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