He had just crossed the border into Thailand from Malaysia at about 6.30am earlier in the day, with his last Facebook post being at 7.45am.
“We are halfway through the Iron Butt Challenge. Now we have another 800km more to go,” he had said, referring to a long distance ride undertaken by motorcyclists to test their endurance within a set period of time.
According to his website, Mr Reza has completed the challenge twice before, once in December 2014, when he rode from Hua Hin in central Thailand to Singapore, and a second time in September 2017, from Singapore to Hua Hin.
He is survived by his wife and three children.
In a tribute to her late husband on Tuesday morning, Madam Huda Lajam described Mr Reza as “my everything”.
She said on Facebook: “He was a good man, with such a kind, soft heart. He loved his children so much, too much. Family was his everything. His passion was the road… wanderlust… adventure… he died doing the thing he loved, riding on his bike.”
