Iran Press/Africa: The convoy came under heavy attack from Islamic State West Africa Province (ISWAP) fighters near Gudumbali in the Lake Chad region on Thursday, the sources said.
The 10-vehicle convoy was on its way to Gudumbali from the town of Kukawa for a military operation against the insurgents when it came under fire, said another military source, who gave the same toll.
Among the wounded are three civilians.
In a statement, the branch of ISIS in West Africa has claimed responsibility for an attack on a Nigerian military convoy.
ISWAP which split from the terrorist group Boko Haram in 2016, has become a dominant threat in Nigeria, attacking troops and bases while killing and kidnapping passengers at bogus checkpoints. 219