A bomb exploded at a wedding reception in the Afghan capital Kabul on Saturday night, wounding at least 20 people, officials and emergency services said.
There was no immediate claim of responsibility for the blast, which went off in the men's reception area of a west Kabul wedding hall.
A Kabul emergency hospital said 20 wounded people had been brought in.
"Unfortunately, the blast caused civilian casualties," Interior Ministry spokesman Nasrat Rahimi said. He put the number of wounded in the tens and said details were being gathered.
Witnesses said members of the minority Shi'ite Muslim community were holding the wedding reception. Sunni Muslim militants including the Taliban and Islamic State have repeatedly attacked the Shi'ite Hazara minorities in Afghanistan and neighbouring Pakistan over the years.
Three weeks ago, a Taliban suicide bomber killed 14 people and wounded 145, also in western Kabul, in an attack that the government said raised questions about the militants' commitment to peace despite expectations of a deal with the United States.
The United States and Taliban insurgents have reported progress in talks on an agreement centred on a US troop withdrawal from Afghanistan in exchange for a security guarantee from the Taliban.
About 20,000 foreign troops, most of them American, are in Afghanistan as part of a US-led NATO mission to train, assist and advise Afghan forces. Some US forces carry out counter-terrorism operations.