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
NewcastleGateshead hopes 'to do the North proud' if selected to host the Great Exhibition of the North 2018.
More than half of Ashington turned out to welcome home Bobby and Jackie Charlton just weeks after winning the World Cup in 1966
New figures have revealed 321 people died in accidental drownings in 2015 nationally.