Medical equipment, desks, windows and doors were reportedly broken in the violence while bloodstains were seen on the hospital’s public relations counter.
Samrong Tai Police Station was notified that several teenagers were involved in a fight in the hospital and they later sent officers to investigate.
They learned that Hack of Mahawong gang had a fight with Jack from Soi Rong Lek gang and contacted about 10 friends, including "Q", to clear the situation.
During the turmoil, "Q" was stabbed by his rival in the chest and later died while the alleged assailant, Thanaphon Thongchaiya, 21, suffered injuries to his mouth and head.
The Mahawong gang came to Muangsamut Puchao Hospital where Thanaphon had been admitted to take revenge for their friend's death.