"Today the situation is very tense," he said. "Social activities are very rare and no business is going on because everyone is fearful. We can see warplanes flying over us and most of the people had already fled from here." The aircraft were believed to be Kenyan. Its troops form part of the 20,000-strong AU force, and the Kenyan navy is also patrolling off Kismayo and has fired on the city's port in recent weeks.