Bangkok, March 6 (SPA) - Unidentified gunmen attacked a railway station, killing two policemen, and wounded a school teacher in two separate incidents on Sunday in Thailand's troubled, largely Muslim south, police said. Two policemen and one militant were killed when an unidentified number of gunmen opened fire at a railway station in Narathiwat province, a police officer told Reuters. In a separate incident in nearby Yala province, gunmen shot and severely injured a 44-year old headmaster, another police officer said. They were the latest incidents of separatist violence in the three southernmost, mainly Muslim provinces of Thailand where nearly 600 people have been killed since unrest started in January last year. --SPA 1352 Local Time 1052 GMT www.spa.gov.sa/244549