Four people were killed on Northern Ireland's roads over the weekend.
A woman died and two were injured in an accident on Hillhead Road, Ballyclare, on Sunday and a 10-year-old boy cyclist died after a crash at Broughshane.
A police officer died when a Land Rover crashed in Desertmartin. Siobhan McCann, 41, was based in Londonderry.
Meanwhile, the police ombudsman is studying the circumstances of a crash in Ballymoney in which an ex-policeman died during a police chase.
The car driven by Trevor John Barr, 50, from the Drumnamallaght area of the town, hit a tree and crashed into a field at midnight on Saturday.
The incident happened off the Garryduff Road in Ballymoney.
Police said he had earlier ignored a request to stop.
A police spokesperson said the incident had been referred to the office of the Police Ombudsman, Nuala O'Loan.
A 10-year-old boy also died in County Antrim on Saturday. He was riding a bicycle at Quarrytown Road in Broughshane at about 1330 BST when he was involved in a collision with a car.