A man has been arrested in connection with a hit-and-run death in which the woman victim is feared to have been dragged for up to a mile.
The 20-year-old student, believed to be from Singapore, was found lying in the road with fatal injuries in Haverstock Hill, north London, at about 2am on Thursday.
Metropolitan Police officers arrested a 50-year-old man, who was being held in custody at a north London police station, they said.
A vehicle was recovered and is being examined by police.
Several personal items, including a purse and mobile phone, as well as blood, were found by investigators outside Belsize Park Tube station.
Investigators believe the woman was hit outside the Royal Free Hospital, in Pond Street, about a mile away.
The victim's body was found near the junction with Downside Crescent, a short distance from the station.
Detectives believe they know her identity but have yet to inform all next of kin.
A post-mortem examination at St Pancras mortuary gave the cause of death as multiple injuries. An inquest will be opened and adjourned at St Pancras Coroner's court in north London on Monday.
Police closed a long section of road as they searched for evidence on Thursday and a helicopter took photographs of the scene. They also examined footage from local authority CCTV cameras and questioned business owners in the area and residents close to the scene.