Not less than seven people, including a suicide bomber, have been killed after a bomb explosion rocked a fuel station belonging to the Nigerian National Petroleum Corporation, NNPC in Hotoro, Kano State.

Three out of the seven killed in the blast were said to be policemen who were guarding the petro station at the time of the attack.

The state commissioner of Police, Adenrele Shinaba, who confirmed the attack, said five people were seriously injured in the explosion, adding that it is the third suicide bomb attack within a period of one week in the north of the country.

It will be recalled that a suicide bomber on Monday set off a bomb while students of a government secondary school in Potiskum, Yobe State, were having their morning assembly, killing more than 30 of them while several others suffered varying degrees of injuries.

Another incident occurred two days later in Potiskum, where a female suicide bomber blew herself up at the Federal College of Education, Kontagora, in Niger State.

Reports initially said that the suicide bomber was the only one killed in the blast, but later it was discovered that a 200-level student of the institution also died in the incident, which also left four others injured.