A 19-year-old man who was arrested in connection with a fatal collision on the A605 on Sunday (May 7) has been released on bail.
The teenager from Northampton was arrested on suspicion of two counts of death by dangerous driving and one count of serious injury by dangerous driving.
Meanwhile, police would like to trace the driver of a silver vehicle that may have picked up a man in the Elton or Haddon area and given him a lift to Haddon Services at about 6am on Sunday.
Anyone with information should contact PC Jay Porter on 101.