KABUL, APR 22 (DNA) – A suicide bomber detonated explosives in a crowd gathered outside a voter and ID registration centre in western Kabul on Sunday, police said, underscoring security concerns ahead of upcoming elections.

“It happened at the entrance gate of the centre. It was a suicide attack. There are casualties, but we do not know how many for the time being,” Dawood Amin, police chief of Kabul, told.

Earlier, a car packed with explosives blew up outside a sports stadium in Afghanistan’s restive south, killing at least 13 people and wounding dozens more, officials said, capping a bloody week in the war-torn country.

The suicide attack happened in Lashkar Gah, the capital of opium poppy-rich Helmand province, as spectators were leaving a wrestling match at the stadium, provincial governor spokesperson Omar Zwak told.