Gunmen opened fire at Nigerian soldiers on Monday and killed four.
The Monday attack happened when militants lay an ambush on a military patrol in central Plateau state.
A military patrol was operating in an area about 180 km southeast of Jos, the capital of the state where numerous terror attack have left many dead.
The Plateau state has become a hotbed for the Boko Haram terrorists with strings of attacks
Nigeria is battling an insurgency that has become almost uncontrollable.
