BANGKOK: A bomb killed one policeman and wounded three state employees on Tuesday in Thailand's restive, Muslim-majority south, where more than 600 people have died in a year, officials said. "The bomb was placed in a booth near a rail track in Yala and exploded around 9:30 this morning and wounded two policemen and two state rail officials," Police Colonel Ekapop Prasitwattanachai told Reuters by telephone from the scene. An official at the hospital in Yala city said one of the two police officers died on the way to the hospital. The blast was the latest incident in the renewed spate of separatist violence in the three southernmost provinces near the Malaysian border, where Muslim separatists fought low key insurgencies in the 1970s and 1980s. Prime Minister Thaksin Shinawatra, who has sent thousands of soldiers to fight the separatists, has put the southern violence as his top security agenda after winning re-election in a landslide last month.