At 9:40pm Thungthong police were called to investigate the shooting inside a restaurant on Wichitsongkram Rd in Kathu.
The incident happened at a one story house with a restaurant at the front.
The body of the woman, identified as Yupin Somrak, 45, was found in a pool of blood in the restaurant̕s kitchen area with gunshot wounds to her neck and cheek, left shoulder and right temple.
Forensic police found four 9mm bullet casings in the restaurant and also a note written in Thai which roughly translates in English as “The house I built...the restaurant I built...you are on drugs. Now I am broke”.
Phumsak Sriput, 45, a Kathu territory defence volunteer, was waiting for police close to the restaurant. He admitted to the murder and handed police the pistol used.
Phumsak revealed to police that Ms Yupin was his former girlfriend and that he proivded her financial assitance in setting up the restaurant even though she had a new boyfriend.
He told police that prior to the incident he had come to the restaurant and asked Ms Yupin to repay him the money, she refused and an argument ensued. A passing police officer stopped and calmed the pair down.
“Later that evening I returned and asked Ms Yupin to payback my money, but she ignored me.
“I sat down and wrote a message on a piece of paper.
“We then started to argue again so I pulled the pistol from my waist and shot her three times. I also fired another shot into the restaurant before walking out. I was waiting for police to arrive,” said Phumsak.
Witnesses to the incident told a similar account to Phumsak̕s said police.
Kusoldharm rescue workers took the body of Ms Yupin to Vachira hospital and police have charged Phumsak with murder.