At least 70 Nigerian soldiers were killed in an ambush on their convoy by militant fighters in the restive northeast, military and security sources said on Tuesday.
Insurgents fired rocket-propelled grenades at a lorry carrying troops as it travelled near Gorgi village in Borno state on Monday, two military officers told AFP without giving their names.
READ MORE
Six Nigerian soldiers killed in terrorist attack
Heavy security to protect South African businesses in Nigeria
"It was a huge loss, at least 70 soldiers have perished in the ambush," one of the officers said.
"The terrorists specifically targeted a truck loaded with soldiers with RPGs and incinerated the vehicle, killing all on board," a second officer said.
"So far 70 bodies have been recovered but the toll is certainly more than that as rescue operation is still underway."
Several soldiers were injured and some others taken captive by the militants, the two officers said.
A spokesman for the Nigerian army told the media that he was unable to comment on the reported attack.
The convoy had left regional capital Maiduguri on its way to launch an offensive on a camp belonging to militants affiliated to the Islamic State group in the area, a member of a government-backed militia fighting the insurgents told the meida.
The Islamic State West Africa Province faction split from Boko Haram insurgents in 2016 and has focused on attacking troops, raiding bases and laying ambush on military convoys.
The group has been accused of increasing attacks on civilians and taking hostages at bogus checkpoints on main roads in the region.
The decade-long conflict has killed 36,000 people and displaced 1.8 million in the northeast of Nigeria.
Fighting has also spilt over the border into neighbouring countries, prompting the formation of a regional military coalition to fight the insurgents.
Agence France-Presse