A series of explosions in eastern Afghanistan killed at least one person and wounded six on Sunday, officials said. In the first attack, a car bomb targeted a building belonging to National Directorate of Security, near the city of Jalalabad in Nangarhar province, a government spokesman said. The early morning blast killed one person and wounded two others, provincial spokesman Ahmad Zia Abdulzai was quoted as saying by CNN. In a second attack, a minibus packed with explosives targeted a police checkpoint in Logar province, said Den Mohammad Darwish, provincial government spokesman said. That blast wounded three people, he said. And in a third attack, a suicide bomber detonated his vest at the gate of a police headquarters in the Baraki Barak district of Logar province, police said. One police officer was wounded, said Raees Khan, chief of security for Logar police.