Four people, including teachers and students, have died after a student opened fire at a school in Thailand on Friday, authorities say.Education Minister Prasert Jantararuangtong did not specify whether the four dead included the suspected gunman, who police said killed himself.The shooting happened at the Debsirin Nonthaburi School in Nonthaburi province north-west of ‌Bangkok.A teacher reacts to the shooting at Debsirin Nonthaburi School. (Reuters: Chalinee Thirasupa)One 18-year-old student told Reuters he initially thought there were firecrackers going off or someone banging an object."I didn't think it was a gun at first," ‌he said."There were many shots: bang bang bang. Then it went quiet. Then it started again."Ambulances wait outside Debsirin Nonthaburi School. (Reuters: Chalinee Thirasupa)In photos circulated by emergency workers, students ‌streamed out of the Debsirin Nonthaburi School, on the north-western outskirts of Bangkok, as ambulances ⁠operated.In February, a teacher died and a student was injured in ⁠southern Thailand's Hat Yai district after a gunman opened fire at ‌a school.Reuters