Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Yemen Police Fire on Protesters Across Country VOA News April 05, 2011 Anti-government protesters carry an injured fellow protester in Sanaa, April 5, 2011 Photo: Reuters Anti-government protesters carry an injured fellow protester in Sanaa, April 5, 2011 Yemeni security forces are on alert across the country as demonstrators continue protests aimed at removing President Ali Abdullah Saleh from power. Witnesses say plainclothes security troops opened fire on anti-government protesters in the southern city of Taiz Tuesday , a day after clashes there left 17 dead. Separate clashes between protesters and security forces were also reported in the capital Sanaa and the Red Sea town of Hudaida On Monday, six people were killed in Hudaida after plainclothes officers fired on a demonstrators marching towards the presidential palace there. In Washington, the U.S. State Department called the violence in Yemen "appalling" amid signs of mounting U.S. pressure on President Ali Abdullah Saleh to relinquish power. The New York Times said the United States is dropping its longtime support for Saleh and negotiating the terms of his departure. Unidentified American and Yemeni officials were quoted as saying the U.S. position changed more than a week ago, when the talks began. The State Department would not confirm the reports. A Yemeni opposition spokesman said U.S. and European diplomats were in contact with Saleh and also asked anti-government leaders for their "vision" for a transition. In response, the opposition on Saturday gave U.S. officials a proposal that Saleh resign immediately and hand over power to a temporary government led by Vice President Abd al-Rab Mansur al-Hadi until new elections are held. The plan also demands that security forces be restructured under a "transitional military council." The Gulf Arab states have invited Yemeni government and opposition representatives to talks in Saudi Arabia. Saleh has given no sign of compromise in the face of continued street protests. The Yemeni president, in power for 32 years, has offered to step down but only after new elections are held. His term ends in 2013. Yemen has seen increasingly bloody protests against the longtime ruler since late January. Saleh recently called for an end to the protests and said he is willing to discuss the peaceful transfer of power "according to the constitution." Some information for this report was provided by AFP and Reuters. Follow our Middle East reports on [1]Twitter and discuss them on our [2]Facebook page. References 1. http://twitter.com/VOAMidEast 2. http://www.facebook.com/pages/VOAMiddleEastVoices/124360240958667?%20%20%20%20v=wall .