More than 100 people are feared dead after a plane crash in Indonesia.A Boeing 737, operated by the low coast carrier Mandala, came down on take off from Polonia airport in Medan, on the island of Sumatra. The aircraft crashed in a densely populated residential neighbourhood, raising fears that many more people may have been killed on the ground. The flames made it difficult for emergency services to access buildings that have been badly damaged. At least 30 bodies have been recovered from the debris. It is reported that the acting governor of Aceh province and the governor of northern Sumatra province were on board.