A woman has been seriously injured in a hit-and-run crash in the Lenton area of Nottingham.
The 23-year-old pedestrian is critically ill at the Queen's Medical Centre after being struck by the vehicle on Derby Road late on Saturday.
Police said they were "investigating a number of vehicles of interest" after studying CCTV footage.
The car involved was driven towards the city centre after the crash near the Hillside junction at about 2330 GMT.
Anyone with information, or any witnesses to the crash, should contact Nottinghamshire Police.