At least six people have died in a school shooting on the outskirts of Thailand's capital Bangkok, according to reports citing police.
The suspected shooter, a 14-year-old male student in the ninth grade, has also been found dead, reports the BBC.
Emergency responders have been dispatched to the scene where students and school staff have been seen running for safety.
Authorities have asked the public to stay away from the vicinity of the Debsirin School in Nonthaburi.
The Debsirin School has branches across Thailand and is widely associated with educational prestige.
At least 15 people are injured - of which two are in a critical condition, police say.
Speaking to reporters earlier, Thai Prime Minister Anutin Charnvirakul expressed condolences for the victims of the school shooting.
"This is really bad, it shouldn't have happened. I don't just feel sorry for the victims but I feel sorry that this happened. How can this happen in our country," he said in a short interview at the government house.
"This is why the government do not allow [citizens] to posses firearms", he added.
One student told that he had thought the sound of gunshots during the school shooting were firecrackers going off, or someone banging something.
"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."
Students were seen fleeing from the school shooting site, and staff members from the Debsirin Nonthaburi School looked visibly distraught waiting outside the school.
Gun laws are quite strict in Thailand, where illegal possesion of firearms can lead to a sentence of up to 10 years. But the country still has one of the highest civilian gun ownership rate in South East Asia.
The country has seen several deadly incidents in recent years.
In February, a school principal and a female student were shot by an 18-year-old gunman during a school siege in southern Thailand. The principal died in hospital the following day.
Last year, five people were killed in a shooting at a food market in Bangkok.