A police officer and 61-year-old woman who died in a crash on Christmas Day have been named.
PC Dave Fields was responding to an incident when the marked BMW 3 Series he was driving was in collision with a Citroen C3 on the A57 in Sheffield.
The woman, who was a passenger in the Citroen, has been named as Lorraine Stephenson.
In a tribute issued by South Yorkshire Police, PC Field’s family said they were “heartbroken” and “devastated”.
“Dave was a loving husband and dad of two, who was a dedicated officer committed to his job,” his family said.
“We are heartbroken by our loss and ask that our privacy please be respected at this devastating time.”
Specialist officers are supporting both families.
A 63-year-old man who was driving the Citroen was taken to hospital where he remains in a serious condition.
Assistant Chief Constable of South Yorkshire Police, David Hartley, said PC Fields had been with the force 12 years and was “a passionate, professional and universally-liked officer”.
“His colleagues, and everyone across the force, are devastated by what has happened,” he said.
South Yorkshire’s Police and Crime Commissioner Alan Billings said he was “deeply shocked” at the news.
“Whilst an incident like this is difficult at any time of year, it is particularly sad at Christmas,” he added.
“I hold the families of PC Dave Fields and Lorraine Stephenson, their relatives, friends and colleagues in my prayers at this most difficult time.”
A Just Giving page has been set up to help raise funds for the families affected by the fatal crash.
The force said the collision had been referred to the Independent Police Complaints Commission.