Police are appealing for witnesses after a car collided with a tree in Chandler's Ford.
Emergency services were called to Templars Way at around 3.30am on Sunday, September 25, after a silver Ford Fiesta ST left the carriageway and collided with a lamppost and a tree.
The four men who were inside the vehicle, all aged between 19 and 21, suffered serious injuries and were taken to Southampton General Hospital.
Two have since been discharged from hospital. A 19-year-old who remains in hospital is described as being in a critical www.bestventolininhalers.com condition.
PC James Fibbens said: “We are investigating the exact circumstances of this collision and would like to hear from anyone who witnessed what happened.
“We would also like to speak to anyone who saw the vehicle prior to the incident.”
Anyone with information is asked to call PC Fibbens on 101, quoting 44160362279, or Crimestoppers anonymously on 0800 555 11
A 21-year-old man from North Baddesley has been arrested in connection with this collision and has been bailed until October 31.