Roadside bomb kills at least 14 members of an Afghan family, including females and children, and five others were injured in the Marja district of southern Helmand province on Saturday.
It is the first major attack since the holy Muslim fasting month of Ramadan has begun.
Omar Zwak, a spokesman for the governor of Helmand province told Anadolu Agency the roadside bomb was triggered while the victims were travelling toward their village by a minibus in Marja district.
Zwak also said the attack was carried out by Taliban.
Haje Fateh Mohammed, a tribal elder from the region, claimed that he counted 14 bodies while retrieving them from the twisted ruins of the vehicle.
In late April, the Taliban announced they started their “spring offensive” and increased attacks on governmental and foreign targets.
Afghan authorities have repeatedly tried to start talks with the Taliban to end the 13-year conflict. But Taliban has stipulated conditions including the withdrawal of all foreign troops in Afghanistan.
In December, NATO’s combat mission formally ended, however a small foreign force of about 12,500, mainly US troops, has stayed in the country to train the local security forces.
The UN Assistance Mission in Afghanistan said almost 1,000 civilians were killed during the first four months of this year.
Marja district of Helmand province was the focus of a major US-led military operation carried out to wipe the insurgent group early in 2010.