Two teenage boys have been arrested on suspicion of rape of a child aged under 13.
The arrests are in relation to an incident which happened around 6.30pm yesterday (Thursday) at the park in Mayberry Place, Berryfields.
Police are appealing for witnesses and the boys - who are aged 14 and 15, and both live in Aylesbury - remain in custody.
Det Insp Phil Hayes from the Child Abuse Investigation Unit, said: “I would ask anyone who may have seen anything suspicious in or around Mayberry Place yesterday evening to contact police urgently on 101.
“I would like to reassure local residents that this is an isolated occurrence and if anyone has concerns they are asked to contact their local neighbourhood policing team on 101.”