THE worst political unrest in decades swept the Indonesian capital yesterday, leaving scores injured and buildings and vehicles ablaze. One person was reportedly killed and 87 injured. Smoke billowed over the city last night after protesters torched buses, banks and government offices. Armed police occupied main intersections in the east-central business district of Salemba as thousands took to the streets. A witness said a man was feared to have been seriously injured or killed after jumping from the sixth floor of the burning Bank Exim building in Salemba Street. The rioting followed a clash in the morning at the office of the opposition Indonesian Democratic Party in Diponegoro Street, near Salemba. Supporters of a rebel faction of the party, aided by hundreds of police and military personnel, evicted supporters of ousted party chairman Megawati Sukarnoputri. Ms Megawati's supporters had claimed her removal in a government-backed congress last month was illegal and had refused to leave the building. Pro-Megawati supporters clashed again with police after security forces ignored a 3 pm ultimatum to vacate the office. It was then that running street battles began as police, backed by army personnel, at least four armoured cars and several riot vehicles, charged the activists. The unrest comes only two days after Jakarta hosted the Association of Southeast Asian Nations annual round of ministerial meetings. Many journalists in Jakarta for that event were present yesterday. Frightened residents barricaded the entrances of small streets and lanes to keep out the rioters, while troops sealed off other routes to the area. The political counsellor at the US Embassy, Edmund McWilliams, was seen being attacked by a soldier as he tried to help a woman who had fallen down. Hospital officials said 10 people needed emergency treatment for head injuries.