A suicide bomber attacked a popular night spot Saturday evening in northern Cameroon, killing at least 10 people only days after Islamic militants were blamed for another attack on the town that left at least 20 dead, the governor said.

Midjiyawa Bakari, the governor of the far northern region of Cameroon, told The Associated Press the attacker detonated the explosives in the popular Pont Vert neighbourhood in Maroua.

"We are still counting the dead and wounded," Bakari said by phone Saturday night.

While there was no immediate claim of responsibility, Islamic militants from the Boko Haram group have been blamed for scores of attacks in the region this year.

Boko Haram, which was founded in neighbouring Nigeria, has pledged its allegiance to the Islamic State group and has vowed to attack Cameroon because the country has supported the Nigerian military's mission to defeat Boko Haram.

Troops from Cameroon and Chad are fighting Islamic extremists in several communities on Cameroon's border with Nigeria. Cameroon has arrested dozens accused of promoting radical ideology and collaborating with Boko Haram.

On Wednesday, at least 20 people were killed in Maroua when two suicide bombers blew themselves up in a busy marketplace and a popular neighbourhood. Authorities later said one of the bombers was a nine-year-old girl who had been disguised as a beggar.

Boko Haram has kidnapped hundreds of girls and young women from near its base in northeastern Nigeria, residents and human rights groups say.