POLICE want to trace a driver who may hold the key to a crash in which a woman died near Penryn.
A 26-year-old was killed in the collision on the A394 between the roundabouts at Treliever, Mabe, and Treluswell, Penryn.
A Travis Perkins' Leyland DAF lorry and her black Volkswagen Bora collided on Monday morning.
But police are hunting a "gold-coloured" car that was seen travelling towards Treliever.
They have asked the driver or anyone who knows anything about the vehicle to get in contact, but would not give any further details.
"Any witnesses, in particular the gold-coloured car, are asked to contact the police," said a spokesman.
The accident happened at about 11.25am near the recycling centre on a straight stretch of road – the woman was driving towards Treliever, the lorry was travelling in the opposite direction.
A fire crew released the woman from the vehicle, but she was pronounced dead at the scene.
Chief fire officer Des Tidbury posted on Twitter: "Another fatal road accident with crews from Falmouth and Camborne releasing a young female from the vehicle."
She had suffered serious head injuries.
An ambulance service spokesman confirmed a rapid response vehicle and ambulance attended the scene.
Police said official identification of the victim had yet to take place, and therefore she may not be named for several days.
However, it was understood she had been living in Cambridgeshire and was visiting her family in the Helston area.
The driver of the lorry, which careered headlong into a hedge and was left skewed across the road, was uninjured but later taken to hospital to be treated for shock.
A police spokesman said: "He was very shaken."
The police said there was good visibility at the time, with low cloud and wet roads, but it was not raining.
The road was closed while officers from the serious collision investigation unit, based at Camborne, examined the scene, and re-opened at about 7pm.
"Highways (workers) were called in at about 6.40pm to clear the road," said the police spokesman.
They advised motorists to avoid the area if possible amid reports of heavy congestion.
Anyone with information is asked to contact the police on 101, quoting reference 0258 of October 8.