( CNN ) -- A roadside bomb killed 11 people in Afghanistan , including three election workers , authorities said Sunday . The blast occurred in Samangan province late Saturday night after polls closed . A mini bus carrying a group from a polling center to their homes hit a roadside bomb , said Sediqullah Aizizi , a spokesman for the provincial governor . The victims had just finished the counting and other work at the polling center when the blast occurred , he said . Before the roadside bomb , violence marred Saturday 's runoff between former Foreign Affairs Minister Abdullah Abdullah and former Finance Minister Ashraf Ghani . The Afghan Interior Ministry said 46 people were killed on election day , including civilian and security forces . READ MORE : Voting ends in Afghan presidential election .
The blast occurred in Samangan province late Saturday night . Victims had just finished the counting and other work at the polling center .