A car suicide bomb detonated on Monday in a checkpoint on the outskirts of Damaturu, the capital of Yobe state killing at least two people and three wounded, hospital sources and witnesses said.
The check point is along a major highway that connects Damaturu city with Borno state capital of Maiduguri. Boko Haram, a group allying ISIS was suspected of hitting this highway and the villages along it frequently.
"We were stopped by the army at a checkpoint. There was an SUV (sports utility vehicle) about five cars away from us. I believe two people were in that car ... One came out and suddenly there was a loud sound and smoke filled the air," an eye witness, Ahmed Mohammed, who was driving towards Damaturu from Maiduguri, said.
A hospital source said they had received two bodies and that other three people were being treated in the hospital for injuries caused by the bombing.
On Thursday, another suicide bombing conducted by a young woman killing at least nine people in Damaturu as Muslim people gathered in to mark the Muslim holiday Eid al-Fitr.
In another eastern city, Bombe, another bombing attack killed 50 people on Friday.
The city of Maiduguri is the birthplace of Boko Haram and has witnessed several suicide bombings during the six-years presence of the group in the city. Boko Haram has in the past used women and girls as human bombs, making the group the key suspect in the latest attacks.
Nigeria’s new President Muhammadu Buhari vowed to eliminate Boko Haram after he was sworn in at the end of May. He has flown to the United States to meet with President Barack Obama to ask for increased US military assistance in fighting the militant group.
Boko Haram has been fighting a six-year insurgency being responsible for the deaths of over 30,000 civilians and security personnel, and causing about 1.5 million people to flee their homes, in a bid to establish a state of its own in northern Nigeria.
Boko Haram - which has announced its allegiance to ISIS - occupied an area the size of Belgium in Nigeria last year.
Nigeria’s former president Goodluck Jonathan was accused of dithering and incompetence in containing the armed insurgency, particularly after the kidnapping of more than 200 girls from a school in the town of Chibok in April last year.
Nigeria alongside military coalition partners of Niger, Chad and Cameroon has claimed successes in fighting Boko Haram since February, forcing the group’s fighters out of territory it used to control.