A policewoman has died in a road crash involving a suspected stolen vehicle in Northern Ireland.
The 27-year-old officer was travelling in a police car on routine patrol when the incident happened in Londonderry last night.
Two other officers in the patrol car sustained non-serious injuries.
Police are hunting for two males that made off from the scene on the Limavady Road in the direction of the Ebrington area and have appealed for witnesses to come forward.
The crash happened around 3.40am.
The Limavady Road remained closed at its junction with Glendermott Road and Clooney Terrace on Saturday morning while investigations are carried out.
Ulster Unionist member of the Northern Ireland Policing Board Ross Hussey said he was shocked and saddened by the officer's death.
"I would like to pass on my heartfelt sympathies to the family, friends and colleagues of this officer," he said.
"We can only imagine the pain that they must be feeling. I hope that her injured colleagues make a speedy recovery.
"This young woman's death in the line of duty serves to re-emphasise the dangers faced by the officers of the Police Service of Northern Ireland on a daily basis, as they put themselves in harm's way to protect the whole community. They deserve our full support."
Chair of the Policing Board Brian Rea also expressed his sympathies.
"On behalf of the Policing Board I would like to offer deepest condolences to the family, friends and colleagues of this young women," he said.
"They will have received the terrible news this morning and will be devastated by this tragic event.
"Our thoughts are also with the two police officers in the car at the time of the collision, who managed to escape without serious injuries.
"To lose a colleague, out on patrol protecting the community, is a terrible blow to the PSNI and I would appeal to anyone who has any information about this incident to go to the police immediately."