An Afghan Independent Election Commission (IEC) official scans a voter with a biometric device at a polling centre for the country's legislative election in Kandahar province on October 27,2018.
The Kandahar governor's spokesman says major roads throughout the province were closed Friday to all vehicles, except those with prior security clearance.
No group including the Taliban has claimed responsibility for the blast yet.
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Afghanistan's parliamentary elections were held against a backdrop of violence, with a multitude of attacks killing at least 36 people.
More than half a million people were registered to vote across the province, according to the IEC's media relations office, with women making up roughly 1 in 8 registered voters.Turnout figures have not yet been released.
There are 112 candidates, of whom 12% are women, for Kandahar's 11 parliamentary seats, the IEC said.
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One photo showed the son, Salah, looking ashen-faced and shaking hands with Mohammed as a video cameraman stood in the background. Another team went to the consulate and removed the hard disk from its security camera, he said.
The ballot was also marred by lengthy delays at polling stations and allegations of fraud.
Stakes are high for Afghans hoping to reform Parliament, challenge the dominance of warlords and the politically corrupt and replace them with a younger, more educated generation of politicians.
A suicide bomber detonated an explosive vest after getting near to the Independent Election Commission. Another eight people were wounded, he said, although the casualty numbers could rise. Security is so inadequate in central Ghazni province that voting had to be delayed until next year.
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