Kazuo Yoshioka, 84, was stabbed several times in the throat and had his throat slit. A knife and scissors were used in the attack.
At a press conference Friday Yoshioka’s killer, Samphan Jamjang, 46, said: “His wife wanted him dead because she had an affair with another man.”
Aside from Yoshioka’s wife Poranee Napadon, 48, Samphan also implicated Sarawut Sa-ardsri in the murder.
He told police that they had planned the murder three days in advance.
He alleged Poranee deliberately stayed away from her home when the murder took place but had left a door unlocked.