The assault on a bank, two hotels and a police station was the latest in a string of attacks that have damaged Kenya's tourism business, a key source of foreign exchange.
The attack near the village of Mpeketoni, is close to the popular Kenyan hotspot Lamu, 211 miles northeast of Mombasa.
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Rain will clear in the north later today as temperatures in the south look set to hit up to 14 or 15 Celsius (57 or 59 F).