Neil Lewis Roger, 71, was found dead beside his scooter with four bullet wounds on his back in an alley in Chonburi’s Bang Lamung district.
His 38-year-old Thai wife, Thitipan Kammalas, said Roger had just returned from England on Wednesday after visiting his ill sister.
She said that he went out on Thursday evening to party with his friends in Pattaya City. She did not know if he had any serious dispute with anyone that could have led to his murder.
Pol Maj-General Thirachai Chamnanmo, commander of the Investigation Division Provincial Police’s Region 2, said on Friday that the investigators would focus on adultery as a possible motive although they have not ruled out other motives.
“We are now collecting evidence and witness accounts,” he said.
Thirachai, who chaired a meeting of Chonburi police investigators on Friday, said that he had instructed them to solve the case and find the gunman as soon as possible.