suicide bombing

A bomber struck inside a mosque packed with worshippers during morning prayers in the town of Mubi.

Witness Abubakar Sule told AFP news agency that it appeared the bomber was part of the congregation.

No-one has said they were behind the bombing but the Islamist militants Boko Haram typically target crowded places in northern Nigeria.

Some 20,000 people have been killed in Boko Haram's eight-year insurgency.

State media said police had been chasing three suspected car bombers that were trying to enter the capital. Police stopped and detonated two of the vehicles, but the third driver entered Tahrir square in the east and blew himself up after he had been encircled in the area.

The authorities said the car bombs were meant target crowded areas of the capital on the first day back to work from the Eid al-Fitr holiday.

The attack sends the strongest message yet to Afghan President Ashraf Ghani — that militants are still able to strike at his heavily fortified seat of power.

No one claimed responsibility for the attacks, though officials indicated they blamed the Taliban.