Abuja, July 8 (RHC)-- A female bomber has detonated her explosives killing four people at a military checkpoint in northeastern Nigeria. Witnesses and a senior military official, who did not want to be identified, said the bombing claimed the lives of four people, including two members of a local vigilante group known as the Civilian Joint Task Force, at a military checkpoint in the Sabon Gari district of Borno state on Tuesday.

The blast took place at some 110 kilometers (68 miles) from Maiduguri, the state capital, around 10:30 a.m. local time (0930 GMT). Over two hours before the Borno attack, at least 25 people were also killed and scores wounded in another bomb blast that ripped through a government office in northern city of Zaria in Kaduna state.

There has been no claim of responsibility for the attacks, but the Boko Haram Takfiri militants have carried out a deadly wave of assaults on mosques, villages and markets in Borno State, killing over 200 people over the past few days following their six-year-old insurgency in the northeastern Nigeria.

The terrorist Boko Haram militants, which have pledged allegiance to the ISIL Takfiri group, initiated their campaign of terror in Nigeria in 2009 and recently expanded terrorist activities to the neighboring countries as well.

Boko Haram militancy has claimed the lives of some 15,000 people and displaced around 1.5 million others over the past years. The Takfiri group has stepped up its terrorist attacks since Nigerian President Muhammadu Buhari came to power in late May.

The president has vowed to curb the rebellion with the help of a 8,700-strong regional military force that will deploy at the end of the month.