KABUL, January 04, 2010 (SPA) - Four U.S. servicemembers and a British soldier were killed in two separate roadside bomb explosions in southern Afghanistan on Sunday, NATO-led and British forces said in statements on Monday. Violence in Afghanistan has reached the highest level since 2001. Last year the number of U.S. service personnel killed in Afghanistan was more than twice that in 2008, according to REUTERS. --SPA 11:44 LOCAL TIME 08:44 GMT www.spa.gov.sa/734479