Story highlights The attack occurs near Quetta in Balochistan province

Official: A suicide bomber had 50 kilograms of explosives in his car

A suicide bomber in a car detonated his explosives near a checkpoint in Pakistan, killing five soldiers, authorities said Saturday.

The attack occurred near Quetta in Balochistan province, according to Murtaza Baig, a spokesman for the paramilitary forces.

The suicide bomber had 50 kilograms (110 pounds) of explosives and blew himself up when he was stopped near the checkpoint, according to the spokesman.

Militants and separatists have targeted security forces in the province for years.