Police and eyewitnesses say at least six people were killed in an explosion that rocked a grocery store frequented by foreigners in Kabul, according to AP. Abdul Ghafar Sayedzada, chief of counterterrorism at the Ministry of Interior, says both Afghans and foreigners are among the dead in Friday's blast. He says police were still investigating what caused the blast. The explosion ignited a fire inside the store and mounds of canned goods and other merchandise were strewn across the floor of the smoke-filled building, making it difficult for police officers to walk inside the building. A large plume of gray smoke was seen above the store, which is situated in the heavily guarded Wazir Akbar Khan district, an area favored by foreigners and wealthy Afghans.