At least a dozen people were killed and another 33 wounded Sunday when a bomb blast tore through a mosque being used as a voter registration center in eastern Afghanistan. The second such attack in less than a month, the explosion reportedly hit a crowd of people gathering in the city of Khost to register for upcoming legislative elections. Authorities said the death toll could rise, as many of those injured were in critical condition. Both the Taliban and a local Islamic State affiliate have been known to target democratic elections, though no group has come forward yet to claim responsibility for Sunday’s attack. In late April, 60 people were killed in a suicide bombing at a Kabul voter registration center that was claimed by the Islamic State.