Kamala Police were called to the scene at 11:30am.
Officers arrived to find a white Isuzu pickup truck, registered in Nakhon Sri Thammarat, with the engine still running.
Inside the vehicle, they discovered the body of Wuttichai Hwanhwang, a resident of Krabi Province.
Suwimon Taothipphumirak, the deceased’s wife and the first to find him. She informed officers that her husband had been suffering from Hepatitis B.
A forensic doctor from Vachira Phuket Hospital was called to examine the scene. No signs of a struggle or assault were found.
The body was handed over to the Phuket Kusoldharm Foundation, who transported it to Vachira Phuket Hospital for post-mortem examination to determine the cause of death.
Police are continuing their investigation, though no foul play is suspected at this time.