Cpl. Matthew Dinning was born in Richmond Hill, Ontario and stationed at Petawawa, Ont.

A roadside bomb killed four soldiers in southern Afghanistan on Saturday in the deadliest attack on Canadian forces in four years.

The soldiers were traveling in an armoured vehicle called a G-wagon when it was blown onto its side by an improvised explosive device, 70 kilometres north of Kandahar city, around 7:30 a.m. local time Saturday.

Three of the men died at the scene, near Gumbad, a small outpost established by the Canadians two months ago. The fourth died shortly after being transported by helicopter to the hospital at the coalition air base in Kandahar.

The Defence Department has identified the Canadians, from top:

Cpl. Matthew Dinning, born in Richmond Hill, Ont., and stationed at Petawawa, Ont., Lieut. William Turner, born in Toronto and stationed at Edmonton, Bombardier Myles Mansell, born in Victoria, B.C., and stationed at Victoria, Cpl. Randy Payne, stationed in Wainwright, Alberta.