Apicha Boonsawat contacted police around 9am on Saturday (Jan 7) before a team of officers took him to Huai Yai police station for detention and questioning. He handed down a 9mm Glock handgun to the officers, reports the Bangkok Post.
The 32-year-old suspect was wanted on an arrest warrant issued by the Pattaya Provincial Court for murder and violation of the Firearms Act, said police.
Neil Lewis Roger, 70, was found dead beside his scooter with four bullet wounds in his back at Soi Khao Makok in Bang Lamung at 9.45pm on Thursday.
Thitipan Kammalas, 38, who was close to the victim and took care of him at his house in Bang Lamung, said the victim had just returned from England on Wednesday.
Ms Thitipan said he went out to party with a British friend in Pattaya Klang on Thursday evening. At night, she received a phone call that he had been fatally shot. She insisted he had no conflict with anyone.
She told the media that his elder sister in England was shocked and saddened after learning about his death. His sister had told her to hold a cremation ceremony for him in Thailand.
During questioning, Mr Apicha admitted to having shot the British man and claimed he got angry after the victim allegedly honked his horn at him and hit his car. This drew his anger and he fired shots at the man. He apologised to society and the man’s family and wanted to take responsibility for his action.
Police opposed his bail and will take him to the court on Monday to seek his detention.
According to media reports, the gunman was a shooting athlete and had won several prizes.