Friends and relatives of the two women who were killed when their car left the road in Swindon have been warned by police to avoid leaving flowers at the crash scene for their own safety.
"We have had one or two people pulling up at the scene to pay their respects," a police spokesman said.
"This stretch of road is a clearway with traffic travelling at speeds of up to 70mph.
"Anyone who attempts to stop, no matter how briefly, could be putting themselves and others at risk of serious injury.
Stunned friends have taken to social media sites today to express their shock, grief and sadness over the deaths of two teenage girls, who were killed in a car crash near Swindon today.
You'll always be remembered by me, love you shay!! RIP Kerry and Shaya???????????? http://t.co/rXTMwg4l5e
RIP Kerry and Shaya who died in a car crash early hours of this morning, and my thoughts go out to the families of jordan, jake and harry xx
So many young lives are being lost and it's really sad RIP Shaya Leigh and Kerry Staniford
Wiltshire Police have named the two young women who died in a crash in the early hours today near Swindon as 18-year-old Shaya Rae Leigh and 17-year-old Kerry Staniford.
Another three male passengers are being treated in hospital with injuries, and one of them has been described as being "very poorly". All were aged 20-years-old. PC Jeff Rice, of the Roads Policing Unit, said:
This was an horrific incident and we would like to offer our condolences to the families of the two young women who sadly died.
We are very keen to hear from anyone who was on the A419 near the scene at around 5am today. We would also like to hear from anyone with any information about the movements of the people in the car during Friday night and the early hours of Saturday.
Two female passengers were killed when the car they were travelling in plunged into undergrowth at the side of a road in Swindon, police said.
Another three male passengers are being treated in hospital with injuries, and two of them have been described as being "very poorly". All were aged 19 or 20 years.
Police received a report from another driver, who saw the car leave the road, at around 5am this morning. They found the grey Renault Clio some 20 metres from the A419.
Wiltshire Police are appealing for witnesses to call 101 and ask for PC Kevin Fry of the Serious Collision Investigation Team.
The family of a walker who died after being trampled by a herd of cows say they are devastated by his death.
Mike Porter and his brother where attacked by the animals as they walked through a field near Turleigh in Wiltshire on Monday. His brother is in a serious condition in hospital.
In a statement the family said "We are in shock and devastated by the loss of our lovely Mike. He leaves Adrienne and their two sons and a very large group of friends who are devastated by the loss of such a lovely and caring person".
A 66-year-old man has died after he was trampled by a herd of cattle in Wiltshire.
It's understood the man and his elderly brother were walking their dog through fields near Turleigh on Monday, when something spooked the cows and they stampeded.
Both men were able to escape from the field but suffered serious chest injuries. The 66-year-old died later in hospital.
Wiltshire Police have confirmed that the body of a former inspector with the force was discovered at a property in Devizes.
Concerned neighbours raised the alarm after hearing gun shots at the house on Saturday morning.
On arrival the bodies of a man and a woman were found who appear to have sustained gunshot wounds.The Major Crime Investigation Team are conducting an investigation into the circumstances of their deaths.
The deceased man has been formally identified as William Harold Dowling (known as Bill) aged 59 from Moonraker Estate, Devizes. Bill was an ex Wiltshire Police Inspector who retired from the force in January 2007.
The families continue to receive support from our specialist officers and ask that media respect their privacy. Our thoughts are with the families at this very sad time.
Wiltshire Police have issued a statement thanking the community in Devizes for their support as they continue to investigate the deaths of a former officer and his partner.
News of these tragic deaths will have been a shock to the community and our thoughts are with the families and friends of the two people involved. I would like to reiterate that this is an isolated incident and reassure members of the community that Devizes is a safe place. I would like to thank residents for their understanding as there will be an increased police presence on the estate as officers continue to conduct vital enquiries.
Forensic officers are conducting a search of a property in Devizes, Wiltshire where the bodies of a former policeman and his partner were discovered yesterday.
A police spokesperson said they hoped to release the identities of the deceased later this afternoon.
A firearm was recovered at the scene where a retired police inspector and his female partner were found dead on Saturday morning in Wiltshire, police have said.
Detective Chief Inspector Ian Saunders from Wiltshire police has said: "The investigation continues to try and establish what led to this tragic incident.
"We have recovered a weapon from the scene. My working assumption is that weapons were discharged and the victims had sustained some form of gunshot wounds."
Post-mortem examinations will be carried out today.
Officers are not looking for anybody else in connection with the shootings, which happened on Moonrakers estate in Devizes.