Nigerian soldiers have killed at least 20 terrorists in the country's northeastern Yobe state, the military said on Thursday.

This comes after terrorist attacks on Monday killed at least 14 people, including 10 soldiers in Borno and Yobe states, according to local civilian and military sources.

Regional military spokesperson Sani Uba said in a statement dated Wednesday and released on Thursday that troops had foiled "coordinated attacks" launched by terrorists on a military base in Goniri, Yobe state, late on Monday through the early hours of Tuesday.

"Over 20 terrorists were neutralised, including a senior terrorist commander identified as Abu Yusu, the Munzir of Dursula," Uba said.

Nigeria ramps up counterterrorism efforts

Uba said some troops were injured, without giving a toll.

A resident of the nearby village of Katarko told AFP earlier in the week that terrorists killed four troops and set fire to buildings and military vehicles in Goniri.

Terrorism in the region has killed more than 40,000 and displaced around two million, according to the United Nations.

Last week, seven soldiers and 11 civilians were killed when Boko Haram terrorists raided a base and attacked the nearby town of Ngoshe in Gwoza district, near the border with Cameroon, shooting and abducting residents.

Nigeria has ramped up its fight against terrorism, with threats posed primarily by Boko Haram.