The first explosion tore through a Shia mosque in the city of Mazar-i-Sharif.

At least 31 people were killed, and 87 were wounded, the BBC has been told.

The Islamic State group (IS) admitted carrying out the attack. The Taliban say they have defeated the IS but the group remains a serious security challenge to Afghanistan’s new rulers.

The attack on the Mazar-i-Sharif mosque was carried out using a remotely detonated booby-trapped bag when the building was packed with worshippers, the IS jihadists said.

The group called the attack part of an ongoing global campaign to “avenge” the deaths of its former leader and spokesman.

IS has also claimed another of Thursday’s attacks – a blast which saw a vehicle blown up near a police station in Kunduz, leaving four dead and 18 injured.

A fourth blast was caused by a mine planted in the Niaz Beyk area of Kabul, Afghanistan’s capital, and wounded two children.

Thursday’s bloodshed comes days after two bomb blasts at Abdul Rahim Shahid high school in a mostly Shia area of the Afghan capital, Kabul. At least six people were killed and more than 20 wounded, officials said.

Local reports and witnesses say the explosion in Mazar-i-Sharif happened at Seh Dokan, one of the biggest mosques used locally by the Hazara minority group.

Afghanistan’s Hazara community is often targeted by Sunni militant groups, including the Islamic State.

The blast is said to have happened while worshippers were preparing to perform prayers. Images shared on social media, which the BBC has not verified, showed the site littered with broken glass and victims being carried.

One Mazar-i-Sharif woman told news agency Reuters she had been shopping at a nearby market when she heard a large explosion near the mosque.

“The glass of the shops was broken and it was very crowded and everyone started to run,” she said, asking for her name not to be used.

Richard Bennett, the United Nation’s Special Rapporteur for Afghanistan on human rights, condemned the attacks.