The pedestrian killed after being hit by a car in County Londonderry in the early hours was 58-year-old Eamon McCafferty.
The incident happened at around 02:00 BST on Saturday on the Foreglen Road near Claudy.
The road was closed in both directions while police examined the scene but it has since been reopened.
Police are appealing for anyone who saw the crash or was travelling on the road at the time to contact them.
Insp Peter Duncan said: "We are especially keen to hear from anyone who may have captured dash-cam footage of the man walking along the road or of the blue Hyundai involved in the collision."
Police said Mr McCafferty was from the Derry area.