Somalia's al Shabaab insurgents claimed responsibility on Saturday for an attack on a bus on Kenya's northern coast that killed seven. According to Reuters, gunmen blocked the bus with their car late on Friday and sprayed it with bullets. They also attacked two lorries carrying mangos near Witu, a town in Lamu County which borders Somalia. "The attack was in response to Kenya's claim that it deployed more troops in the coast and thus tightened security," Sheikh Abdiasis Abu Musab, spokesman for al Shabaab's military operations told Reuters.