A security guard working at Samitivej Srinakarintara Hospital has been arrested and confessed to be a mass murder. He has killed over 10 other security guards and wounded at least 8 others.
He said in his own statement that he woke the security guards up when they slept on duty but because they told him off not to wake them up he got angry.
He then decided to kill them and take their valuables and sell.
The Thai police have sent him to a hospital to evaluate if he is to be consider mentally ill.