Security staff block path after deadly explosion in Cairo Security personnel block a path from gathering onlookers following an explosion in Cairo which killed two policemen who were chasing a man believed to have targeted security staff near a mosque last week according to authorities. The blast in the crowded Darb al-Ahmar district in downtown Cairo also killed the bomber. IMAGES AND VOXPOPS+COMPLETES VID1305958_EN+WARNING: IMAGES INCLUDE DEAD BODY