UPDATE: Witness appeal after car leaves carriageway at Pease Pottage
Emergency services arrived on the scene at the A23 at Pease Pottage, near Crawley, at 6.16am.
A car had been travelling northbound overtaking other traffic when it left the carriageway and rolled over several times, before coming to a rest on an embankment, according to police.
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Hide AdThree people were inside the car, a black Volkswagen Polo, and all sustained injuries, police said.
An 18-year-old woman from Crawley, who was a rear seat passenger, was taken to the Royal Sussex County Hospital, Brighton, by ambulance for treatment, according to police.
An 18-year-old man from Redhill, Surrey, has been arrested on suspicion of drink-driving, confirmed police.
The nearside lane of the three-lane carriageway was closed and a temporary speed limit imposed until 7.40am while the incident was dealt with.
Anyone who saw what happened or noticed the black VW being driven shortly beforehand is asked to email [email protected] or phone 101, quoting serial 217 of 11/07.