MAZAR-I-SHARIF: A roadside bomb has killed 11 people on their way to a wedding in the northern Afghan province of Faryab, officials said Friday, as civilian casualties rise in the war-torn country.

The blast occurred on Thursday just as 30 Afghan civilians were killed in US air strikes in the neighbouring province of Kunduz, a hotbed of Taliban insurgency.

No group immediately claimed responsibility for the Faryab blast , which also killed women and children, but officials blamed Taliban militants.

"Eleven civilians were martyred and 12 others wounded when they struck a roadside bomb in Kosa Qala village in Faryab province," provincial spokesman Ahmad Jawed Bedar told AFP, adding that the victims were heading to a wedding .

A provincial police spokesman confirmed the same toll.

Roadside bombs are the favourite weapon of the Islamist militants fighting to oust the Western-backed Kabul government.

Insurgents frequently target Afghan police and military, but the surge in attacks has also taken a heavy toll on civilians.

The UN recently cited a 42 per cent rise in casualties caused by pro-government forces this year compared to 2015.

But Islamist militants were responsible for the majority - 61 percent - of total casualties.