AMMAN - Syrian forces have killed 31 civilians since Saturday during demonstrations in the northwestern town of Jisr al-Shughour demanding the removal of President Bashar Assad, residents said on Sunday. The killings began when snipers deployed on the roof of the main post office fired volleys of bullets at a funeral for six protesters who were killed on Friday, when a large protest demanding democracy came under fire, they said. RELATED: At least 70 killed in Syrian uprising’s bloodiest day UN chief demands end to 'violent repression' in Syria "In the last 24 hours at least 31 people have been shot dead, among them eight mourners at the funeral," said one of the residents, a history teacher who gave his name as Ahmad. var zflag_nid='794'; var zflag_cid='1091/988'; var zflag_sid='122'; var zflag_width='300'; var zflag_height='250'; var zflag_sz='9'; He said angry mourners torched part of the post office after the shooting. The official Syrian news agency said "armed terrorist groups" killed four policemen in the town, attacked public buildings and "spread terror in the heart of citizens who called on the authorities to intervene forcefully to protect them". The Syrian Observatory for Human Rights said 31 civilians and four police were killed. Ammar Qurabi, head of the Syrian Human Rights Organisation, said security forces killed at least 20 civilians. "The killings in Jisr al-Shughour are an act of revenge by the state for the Friday protests and another attempt to silence a Syrian town through the use of violence," Qurabi said. <img title="Click for full Jpost coverage of turmoil in the Middle East" alt="Click for full Jpost coverage of turmoil in the Middle East" src="https://www.jpost.com/HttpHandlers/ShowImage.ashx?ID=159809" style="height: 165px; width: 480px" width="700" height="500">Click for full Jpost coverage of turmoil in the Middle East