Five people have been arrested after a teenage girl was raped in a south London park.
The girl is being supported by specialist officers, police said.
The five people, males in their late teens, have been released while the investigation continues.
Officers have appealed for witnesses and more information that may help them in their enquiries.
They want to speak to anyone who was in or near the park at the time of the attack and who may have seen or heard something suspicious.
Police have asked anyone who may have useful information to get in touch via 101, quoting reference Cad 8209/15May.