Three people were killed and six others wounded in three successive blasts in Afghanistan's Jalalabad city, the capital of Nangarhar province on Saturday, an official said."A bomb blast occurred at around midday near the building of local media Inhykas TV in Jalalabad. As soon as people gathered near the site and responding units of security forces arrived, two more blasts went off leaving the casualties," provincial government spokesman Attahullah Ghogyani told Xinhua news agency.The victims included two civilians and one member of intelligence National Directorate of Security (NDS). One NDS offical was among those injured.No group has claimed responsibility for the attack so far but Taliban insurgents and Islamic State (IS) militants have presence in the province, 120 km east of Kabul.