Boko Haram jihadists have killed three loggers near a remote village in Borno state.

The loggers were seized with their truckload of firewood near Aisa-Wulomari village, 40 kilometres (25 miles) from Maiduguri.

“The decapitated bodies of the three loggers were found by the roadside,” said local vigilante Ibrahim Liman in Maiduguri, Borno state capital.

“The truck and their firewood were also abandoned near the bodies of the loggers,” said Liman.

“Decapitation is a Boko Haram hallmark,” he added.

Boko Haram has increasingly targeted loggers in their armed campaign, accusing them of spying and passing information to the military and the local militia fighting them, Liman said.

The terror group's eight-year campaign of Islamist violence has killed over 20,000 people and displaced some 2.6 million from their homes, triggering a dire humanitarian crisis in the region.

In April eight loggers were killed and their bodies burnt by Boko Haram jihadists at Kayamla village, 10 kilometres from Maiduguri while collecting firewood in a bush.