Three women have died in a crash between a car and a lorry in Lincolnshire amid weather warnings after snow and ice hit the county.
The vehicles were travelling in opposite directions when they collided on the A15 near Baston at 06:15 GMT.
Investigators said it was too early to say whether the weather was a factor.
The women were all travelling in the car and a fourth occupant sustained serious but not life-threatening injuries.
John Siddle, from Lincolnshire Road Safety Partnership, said the lorry driver was "unscathed".
Police said officers were still working to inform family members of the deaths.
The Lincolnshire force urged witnesses and drivers with dash cam footage to contact them.
Roads are particularly hazardous in the south of the County so please drive slowly, according to the conditions and with care. By 0630 we were dealing with 5 collisions one of them involving injury on the A15 at Baston - which will be closed whilst we deal with it.— Lincolnshire Police (@lincspolice) February 27, 2018
The A15 had been busy when the crash between a Renault Clio and a Scania lorry happened near the Waterside Garden Centre, police said.
Sgt Helen Alcock, said: "Sadly three people have lost their lives this morning and several people have faced the shock of witnessing or coming across the scene."
About eight miles (12km) from Baston, a bus carrying 45 school children left the road near Deeping St James. None of the children were injured.
A number of lorries have been stuck on hills and vehicles have skidded off roads in the county.