Some 10 Afghan civilians were killed and four others wounded in a grenade attack in eastern Laghman province overnight, the provincial government said on Monday, China's Xinhua news agency reported.

"Ten members of a family were martyred and four others injured after unknown men hurled two hand grenade into their house in Muruwatkas locality of Badpakh district roughly at 07:30 p.m. (local time) on Sunday," it said in a statement.

Among the victims were several women and children and the injured were shifted by the security forces to a hospital for treatment, the statement added.

Motive behind the attack remained unknown and no group or individual has claimed responsibility for the incident yet.

Police have launched an investigation into the incident.

Provincial Gov Abdul Jabar Nahimi denounced the attack and ordered the health authorities to provide best medical treatment for the wounded besides instructing the security force to find and bring to justice the culprits behind the attack, the statement noted.

More than 3,490 civilians were killed and over 7,920 others injured in conflict-related incidents across Afghanistan last year, according to figures released by the UN mission in the country. -- Bernama