Maiduguri - Suspected Boko Haram gunmen killed four people on Sunday in a road ambush in Nigeria's restive northeastern state of Borno, a military source and a civilian joint task force said.
A car carrying six people came under attack on the Damboa-Biu road near the remote village of Nwajurko at about 9:30 a.m. (0830 GMT), the military source said.
The militant group has carried out several attacks on the Damboa-Biu road in the last two years.
"Four of the passengers were shot dead by Boko Haram while two others who fled the ambush sustained injuries partly from gunshots," said the military source, who did not want to be named.
Adamu Mamman of the civilian JTF, a grassroots community security group, confirmed the four deaths.
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"When we heard of the ambush ... we mobilised our men to go to the scene but unfortunately we saw four people already dead," he said.
Mamman said one of the survivors from the ambush had described how the attackers opened fire on the car when the driver tried to speed off.