Picture courtesy : Getty images/BBC

At least 100 people have been killed and wounded in a mosque explosion targeting Shiite Muslims in northern Afghanistan, a Taliban police official said.

Residents in Kunduz, the capital of a province of the same name told AFP the blast hit a Shiite mosque during Friday prayers, the most important of the week.

Images on social media showed bodies and debris inside the mosque, used by the minority Shia Muslim community.

No group has yet claimed responsibility for the attack.

A medical source at the Kunduz Provincial Hospital said that 35 dead and more than 50 wounded had been taken there, while a worker at a Doctors Without Borders hospital reported 15 dead and scores more wounded.

IS-K, the Afghan regional affiliate of IS that is violently opposed to the Taliban, has carried out several bombings recently, largely in the east of the country.

Kunduz's location makes it a key transit point for economic and trade exchanges with Tajikistan.

It was the scene of fierce battles as the Taliban fought their way back into power this year.