Officials say four Afghans working for a French development organization have been kidnapped in northern Afghanistan.

Authorities in Faryab province said Tuesday they believe Taliban militants abducted the aid workers the day before while they were driving through the area.

However, the director of the aid group ACTED says it still is unclear who kidnapped the workers. Ziggy Garewal said the group was unsure whether its staffers were taken by militants or because of a local dispute.

No one has yet claimed responsibility for the abduction, and the condition of the workers is not yet known.

ACTED works primarily in the fields of rural development, civil society and agriculture. The kidnapped workers reportedly were returning from conducting hygiene training at a local mosque.