PHNOM PENH, Cambodia, Rabi Al-Awwal 04, 1432, Feb 07, 2011, SPA -- Cambodia called for U.N. peacekeepers to help end the fighting along its tense border with Thailand, where artillery fire echoed for a fourth day Monday. A one-hour clash Monday morning stopped after both sides agreed to an unofficial cease-fire. Fighting has erupted daily since Friday, leaving at least five dead, according to a report of the Associated Press. --SPA 11:09 LOCAL TIME 08:09 GMT www.spa.gov.sa/862606