(AFP) – A four-year-old girl and her father were among three people killed Tuesday when a bomb hidden in a motorcycle’s fuel tank exploded outside a school in Thailand’s insurgency-plagued south. The device went off as pupils and teachers filed into the school in the Tak Bai district of Narathiwat province for the start of the day. Two of the dead were father and daughter, local police detective Noppdol Kingthong told AFP, adding that the bomb was set off by radio control as the pair neared the school gate. A 23-year-old man later died in hospital and around a dozen other adults were being treated for injuries, according to a hospital worker who said the dead were Muslim. Ethnic Malay insurgents in the kingdom’s so-called “Deep South” have for years targeted schools and teachers, which are seen as symbols of Thai state power in the culturally distinct Muslim-majority region.