Updated 14.10.

TWO MEN HAVE been arrested in related to a road collision  in Derry yesterday in which a female PSNI officer was killed.

The PSNI said the 27-year-old officer was in a police vehicle on a routine patrol and collided with another vehicle, believed to be stolen.

Two other officers in the car sustained non serious injuries. Two males made off from the scene in the direction of Ebrington.

Speaking earlier today, PSNI Chief Constable Marr Baggott said that no stone would remain unturned in order to bring those responsible to justice.

The PSNI said the two men, aged 23 and 25, who were arresred were “currently helping police with their enquiries”.

Garda Commissioner Martin Callinan today expressed his condolences to the family and colleagues of the officer.

“Our thoughts and sympathies are with our friends in Northern Ireland as they mourn the loss of their colleague,” he said. “We also wish a speedy recovery to the officers injured in the incident.”

The Limavady road remains closed at its junction with Glendermott Road and Clooney Terrace. The road is expected to remain closed for some time.

As standard procedure, the Police Ombudsman has been informed.

Police are appealing for witnesses to contact them. Anyone with any information is asked to contact Strand Road Police Station on 0845 600 8000. Or if someone would prefer to provide information without giving their details, they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555 111.