Hampshire Police are issuing advice to parents after a man was assaulted by a group of teenagers in Havant Park.
A 20 year-old man was left with cuts and bruises to his head after being attacked at the toilet block.
Earlier, he and three friends had been spoken to by a group of youths, aged between 14 and 16, sitting on a bench.
It is understood that up to 30 people were in the area at the time. The victim is now recovering at home. Two of his friends were also left with minor injuries.
Police are keen to speak to anyone who was in the area at the time or who may have mobile phone footage of what happened.
It's believed that the youths that were seen in the area were aged between 14 and 16. Many were wearing shorts and t-shirts, some were not wearing tops.
Investigating officer PC Peter Vincent from Havant’s Neighbourhood Policing Team said there were lots of witnesses:
Operation Syren is a year-long campaign being run by Havant’s Neighbourhood Policing Team to address concerns about anti-social behaviour in the town centre.
They're issuing the following advice to parents of children under the age of 18:
· Before they go out, find out what your children are doing, where they are going, and when and how they will be getting home.
· Sometimes children do not consider the consequences of their actions, so ask them to think about whether they could be causing distress to others, damaging the environment or putting themselves in danger.
Often children do not need to buy alcohol, they take it from home without their parents' knowledge. Keep alcohol in a safe place and keep a check on how much you have, so that you will know if any goes missing.
· Young people are also often the victims of disorder, so if you or your child experience anti-social behaviour, make sure you report it to the police. We cannot send officers to every incident, but if you let us know what is happening in your area, we can make sure our resources are targeted effectively.