A man has been arrested on suspicion of abduction after bystanders reported their fears for a woman in a van at a south London beauty spot.
Officers tracked a man down to Downham Way just before 4pm and the van was also found.
A man in his mid-30s has been arrested on suspicion of abduction and currently remains in police custody.
He was also arrested for possession of a prohibited weapon, possessions of class A and B drugs, possession of an imitation firearm and possession of offensive weapons.
A Scotland Yard spokesperson said: “No female victim has been located at this time, enquiries continue to ensure they are safe.”
Police said they are not currently looking for anyone else in connection with the broad-daylight incident.
Witnesses or anyone with any information is asked to call police on 101 or contact officers via Twitter @MetCC, quoting CAD3747/27APR.