Four people were killed and 35 injured by a suicide bomber in the northeastern town of Potiskum, said a Nigerian media outlet. The attack took place on Sunday in the Yobe state of Nigeria.

The attack in the largest commercial center in Nigeria's Yobe state, occurred at around 10 am near a gasoline station, Channels Television said. "The information I have is that the car was pretending to be scouting for passengers," Yobe state police commissioner Danladi Marcus told the news agency.

The attack was carried out in a crowded marketplace using a car. Witnesses told news agencies. "He drove a car into the station on the outskirts of Potiskum, called over a girl selling water and then triggered the explosion."

Although no major group has taken responsibility for the blast, authorities believe that the Jihadists group, Boko Haram, is responsible for the attack.

Potiskum has been under attack several times in the past with two female suicide bombings a few weeks prior in a marketplace being the most recent. The escalated attacks are a testimony to the rising manpower and territory being seized by Boko Haram in northeastern Nigeria.

"Yobe is one of three states in north-eastern Nigeria which has been under a state of emergency for the last 20 months in a bid to end the Islamists' six-year insurgency", BBC reported. Though the same time was used by the Islamist group to gain control over numerous towns and villages in the region to fulfill their agenda of an Islamic state.

In a separate incident the same day, "Boko Haram attacked a village in northern Cameroon early Sunday, killing three people and staging its largest kidnapping yet in the country", the information minister said, adding that some of the hostages were children.

Nigeria seems to be witnessing spiraling violence in wake of the impending general elections between President Goodluck Jonathan and former Junta chief Muhammadu Buhari