A 19-year-old man is critically ill in hospital after being hit by a car in Newcastle.
The accident happened on the Great North Road near Jesmond when he was hit while returning from a night out.
Police say that the car involved was travelling north and did not stop.
A 20-year-old man has been bailed as investigations continue.
Two men and two women have been released with no further action.
More top news
Longest spell of winter so far. Bitterly cold with further wintry showers
A look ahead at a wintry weekend forecast.
More than £55k has been raised to help Alan Barnes, a disabled pensioner, relocate after an attempted mugging outside his house.