**PLEASE NOTE: EDIT CONTAINS GRAPHIC MATERIAL**<br/> <br />EDIT CONTAINS CONVERTED 4:3 MATERIAL<br/> <br />At least four police officers were killed in Kenya on Monday (March 4) just hours before voting began in the presidential election.<br/> <br />A gang wielding machetes attacked the officers as they tried to keep the peace in the port city of Mombasa.<br/> <br />Several others suffered severe wounds.<br/> <br />The attackers have not yet been identified, but police say they could be linked to a regional separatist movement.<br/> <br />Polling stations opened across the country at 6 a.m. as the tense election got underway.<br/> <br />Analysts say it's a test of whether Kenya can repair its reputation, which has been marred by election violence in the past.<br/> <br />Hundreds of people died in 2007 as a disputed ballot result caused tribal fighting.
