Bomb kills three Vietnamese tourists, Egyptian guide near pyramids: officials

The bombing is the first deadly attack against foreign tourists in Egypt for over a year and comes as the tourism sector, a vital source of foreign currency revenue, recovers from a sharp drop in visitor numbers since the country's 2011 uprising.Islamist extremists, including militants linked to Islamic State, are active in Egypt and have targeted foreign visitors in the past.The tourists were heading to a sound and light show at the pyramids, which they had visited earlier in the day, said Lan