Four people have been killed and three injured in a bomb explosion on the Indonesian island of Sulawesi. The bomb hit a crowded cafe in the southern town of Palopo, 1,800 kilometres (1,120 miles) north-east of Jakarta at about 2215 (1415 GMT). Police say they do not know who planted the bomb, which was hidden under a table inside the cafe. Violence between Christians and Muslims has dogged parts of the island despite a 2001 peace deal. But officials expressed surprise at the blast, saying that the Palopo area was generally peaceful. Full Story