At least five people have been killed in a rally in the Kenyan capital, Nairobi. Dozens were injured. Reports say the people panicked when they thought they heard an explosion. The Kenyan police say the explosion was small and left no debris. This might suggest there was no bomb. But police are investigating the possibility of a home made device which detonated . Thousands of people had gathered in a Park in Central Nairobi to attend a rally organised by religious leaders and politicians opposed to the new Constitution. They are against Clauses relating to abortions and Muslim Courts.