Maj. Mohammad Ghaws Sistani, Deputy Police Chief of Nimroz province said that the incident took place in Chahar Burjak District on Saturday.
He said that six civilians belonging to a single family were driving in a Corolla vehicle that ran over a landmine in Rodbar village leaving two of them killed and four others wounded.
Maj. Sistani held Taliban responsible for the explosion and said that they are planting roadside bombs.
Roadside bombing are one of the biggest cause of surging number of civilian casualties in Afghanistan.
A statement released by the United Nations Assistance Mission in Afghanistan (UNAMA) in August stated that 1,523 civilian casualties (282 deaths and 1,241 injured) have been recorded between 1 January and 7 August of this year which is almost doubling the death and injuries recorded during the same period of 2014.
UNAMA repeated its call for Anti-Government Elements, including Taliban to cease attacks in civilian-populated areas.