A 23-year-old local man, who was arrested on suspicion of causing death by dangerous driving and causing serious injury by dangerous driving after Sunday’s accident, has been released on bail pending further inquiries.
The arrest was made following the fatal crash on the A6, Bedford Road, Rushden, near to the junction with Avenue Road, at about 8pm on Sunday.
Police confirmed earlier this week that Ashley James Circuit, 23, from Farnham Drive, Rushden, died at the scene.
A blue Volkswagen Bora, heading out of Rushden, was in collision with a silver Peugeot 206 which was travelling in the opposite direction.
Mr Circuit, who was a passenger in the VW Bora, suffered fatal injuries.
The driver of the Peugeot, a 26-year-old local woman, suffered serious but not life-threatening injuries and was taken to Walsgrave Hospital.
A police spokesman said: “Officers are continuing to appeal for witnesses and in particular are keen to trace a driver who was on the Bedford Road, heading towards Rushden at the time of the incident, and is thought to have flashed his or her headlights at an oncoming overtaking vehicle.
“Officers believe this driver may have vital information about the collision or the circumstances leading up to the collision.”
The collision was the second fatal accident to be reported by police on county roads in 24 hours.
A 32-year-woman died following a collision on the B4525 Welsh Lane heading towards Banbury just after 7am on Monday.
Anyone with information about either collision is asked to call the Drivewatch hotline on 0800 174615.