A third teenager has died following a crash in the early hours of yesterday morning.
The accident occurred shortly after 1am when a red Renault Clio left the road and hit a tree at Rowde, near Devizes, Wiltshire.
Two passengers killed in the incident were named by police as Frankie Bowyer, 16, and 17-year-old Jamie Walker, both from Chippenham, Wilts.
Earlier today a third passenger - believed to be a 17-year-old boy - also died from injuries sustained in the collision. Formal identification has yet to take place.
The crash happened close to the entrance to Rowdeford School on the A342.
Frankie, of St Teresa's Drive, was declared dead at the scene and Jamie, of Hatherell Road, was airlifted to Swindon's Great Western Hospital but later died.
The 20-year-old driver was also injured and taken to hospital for treatment, as was a 17-year-old boy who was initially said to be in a critical condition.
A Great Western Ambulance Service (GWAS) crew was sent to the incident.
A spokesman said: "Our crew notified our control room to request back-up and began assessing patients.
"Apparently they had to smash the car windows to start providing essential life-saving treatment while back-up, including the fire service, was en route."
Jeff Nash, from the ambulance service, added: "This was clearly a very serious incident with a tragic outcome.
"However, our crews, working with a doctor and other emergency services on scene, did everything they could to give the patients the best possible chance."
A rapid response vehicle attended the scene with another two ambulance crews, a doctor, Wiltshire Air Ambulance and a GWAS on-call officer.