Stunned holidaymakers at the popular holiday resort watched on as the warring factions brawled in broad daylight in front of horrified children.
Cops swooped on the north Wales site on Wednesday afternoon after receiving reports that a fight had broken out between a family from Merseyside.
A shocked witness said: “There was a mass brawl involving around 20 family members from Merseyside, who were all fighting each other.
“Police were called and one person was arrested, all in front of families children.”
“Police were called and one person was arrested, all in front of families children”
On arrival, Wales police arrested a man who was taken into custody for questioning. He has since been released, Liverpool Echo reported.
A spokesperson for North Wales Police said: “We were called to a disturbance at Central Beach Pontins in Prestatyn at 4.11pm on August 7.
“A man from Merseyside was arrested to prevent a breach of the peace and was later released without charge.”
Earlier this year, a furious mother told of her disgust after arriving at Pontins Brean Sands to find that her chalet was “filthy”.
Carieann Mackay, from Penarth, Wales, said she and her kids had to put up with crusty socks and empty crisp packets strewn all over the floor of the accommodation.
The mum-of-four was so appalled by the mess that she bleached the surface herself and threatened to leave early.
She added: “I wiped the floor with a cloth and it was black. There’s no sweeping brush and they’ve also put a TV on the microwave.”
Every year thousands of Brits flock to Pontins resorts across the UK.
Founded in 1946, the chain is currently owned by Britannia Hotels and has six sites in Southport, Prestatyn, Somerset, Suffolk, Camber Sands and an adult-only site at Weston-Super-Mare.