The number of people killed in a suicide attack on a peaceful demonstration in Kabul has climbed to 80 according to Afghanistan's interior ministry.
The ministry said in a statement that at least 231 people were also wounded.
A suicide bomber struck a protest march in Kabul by members of Afghanistan's ethnic Hazara community.
President Ashraf Ghani, who has condemned the blast, declared Sunday a day of national mourning.
I promise you I will take revenge against the culprits. I have ordered the attorney general to set up a commission to investigate this incident.
At least 61 people have died and 207 are wounded in a suspected suicide attack in the city of Kabul in Afghanistan.
Islamic State have claimed responsibility for the attack targeting members of the country's Hazara Shi'ite Muslim minority at a large demonstration, the group's Amaq news agency reported.
"Two fighters from Islamic State detonated explosive belts at a gathering of Shi'ites in... the city of Kabul in Afghanistan," Amaq said in a statement.
At least ten are dead after an explosion at a demonstration in Kabul apparently caused by a suicide bomber, interior ministry officials said.
Dozens are reported to be injured and there are fears the death toll may rise after the attacker struck a packed protest where people were demanding a change of the route of a power transmission line.
The death toll from the suicide car bomb attack in Kabul has more than doubled to 64 and the number of injured has risen to 347, officials said.
A Taliban suicide bomber targeted the offices of Afghanistan's main national security agency in Kabul yesterday during the morning rush hour.
The attack, the worst in the Afghan capital in almost a year, is the first assault Kabul since the Taliban announced the launch of its spring offensive.
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An explosion has shaken houses in the diplomatic quarter of the Afghan capital, Kabul and gunfire has been heard according to Reuters news agency.
A huge explosion was heard in Afghanistan's capital early on Tuesday, Reuters news agency reports.
The cause and extent of casualties, if any, were not immediately known.
The blast rattled windows in the heart of Kabul's diplomatic quarter and sirens were soon heard wailing.
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The Taliban have claimed responsibility for a suicide car bomber that attacked a foreign motorcade in Kabul, killing at least three international troops and injuring 13 people.
The blast happened just off a busy road that runs from the US Embassy to the airport, near the country's Supreme Court.
The Taliban claimed responsibility for the attack in an emailed statement to journalists. The international military coalition ISAF did not have any immediate information.
The attack comes as the country's two presidential contenders continue negotiations to form some sort of national unity government.