An investigation has been launched following reports of a “sexual offence” in St Neots.
There is currently a heavy police presence at the play park, which is situated off Swift Close as a police investigation is taking place.
Witnesses say the park has been cordoned off with police tape.
A spokesman for Cambridgeshire police said: "We were called at 1:45am in regards to a report of a sexual offence to an adult.
"Police are currently dealing with the incident."