At least 5 killed in Nigeria as van strikes Boko Haram mine At least 5 killed in northeastern Nigeria as van strikes Boko Haram-buried mine

MAIDUGURI, Nigeria -- A resident says at least five farmers are dead and dozens are wounded in northeastern Nigeria after their vehicle struck a land mine buried by Boko Haram extremists.

Bello-Indimi Zabarmari says the blast occurred Wednesday. He says the mine was planted as the extremists fled after trying to attack Khaddamari town outside Maiduguri city in Borno state on the eve of the Feb. 23 elections.

Zabarmari says the farmers defied soldiers' warnings not to use the road because they wanted to reach their cucumber farms.

He says four died at the scene and a fifth died at a hospital. A security source who spoke on condition of anonymity because they were not authorized to speak to reporters had estimated seven dead.

Nigeria's Boko Haram insurgency is now a decade old.