A twin suicide attack this week at a bus station in Nigeria's Kano city killed 34 people, a union official said Thursday, giving an updated toll after police said 10 people died.

Boko Haram Islamist militants have not claimed the blasts, but the group has repeatedly targeted Kano, including bus stations, throughout its six-year uprising.

The Emir of Kano, Muhammed Sanusi II, on Saturday said Nigeria's Muslims will not be intimidated into abandoning Islam following coordinated bomb and gun attacks on the city's central mosque that left at least 120 people dead.

Nigerian President Goodluck Jonathan vowed Saturday to hunt down those behind "heinous" attacks which left at least 120 dead at the mosque of an Islamic leader who had issued a call to arms against Boko Haram.

At least 270 others were also wounded when two suicide bombers blew themselves up and gunmen opened fire during weekly prayers on Friday at the Grand Mosque in Kano, the biggest city in the mainly Muslim north of the country.

At least 120 people were killed and 270 others wounded on Friday when two suicide bombers blew themselves up and gunmen opened fire during weekly prayers at the mosque of one of Nigeria's top Islamic leaders.

The attack at the Grand Mosque in Kano, the biggest city in the mainly Muslim north of the country, came just as Friday prayers had started.

At least 13 people were killed and 34 injured on Wednesday as a gunbattle broke out between police and suspected Boko Haram suicide bombers in Nigeria's second city of Kano, police said.

Kano State police commissioner Adelere Shinaba said the gunmen, whom he described as "insurgents", ran into the Federal College of Education after exchanging fire with police outside the grounds.

Women in north Nigeria's largest city Kano are abandoning their traditional religious dress after a spate of suicide bombings by young girls with explosives under their hijab.

A female suicide bomber killed six people at a college campus in Nigeria's Kano city on Wednesday, the fourth time Boko Haram Islamists were suspected of using a female attacker in as many days.

The latest violence came as the government announced the arrest of a 10-year-old girl with explosives strapped to her chest in a neighboring area.

Two blasts by female suicide bombers killed three people and injured 13 in Nigeria's Kano city on Monday, bringing the number of attacks this week in the area to five and overshadowing festivities marking the end of Ramadan.

The violence blamed on Boko Haram Islamists marred what was supposed to be a festive day in Kano, a city of more than six million people and the largest in Nigeria's mainly Muslim north.

At least five people were killed and eight were injured Sunday in a bomb attack on a Catholic church in a mainly Christian area of Kano, the largest city in Nigeria's north, police said, as five cops were hurt as they prevented a female suicide bomber from carrying out an attack outside a Kano university.

The church bombing came shortly after the end of mass.

Two men have been arrested in connection with a suicide car bombing in the northern Nigerian city of Kano that killed four, police said on Tuesday.

"Two suspects are now in custody in connection with Sunday's bombing in Sabon Gari," Kano police spokesman Musa Magaji Majia told Agence France Presse.