On their wedding day in northeastern Thailand, Chaturong Suksuk, a Thai para-athlete and former military, shot his wife, her mother, her sister, and two guests before taking his own life. Read full story
According to reports, he got into a fight and left the party before coming back with a lawfully purchased gun.
Police stress the need for additional inquiry despite concerns on the age gap in motive speculation.
Asean Para Games silver medallist Chaturong lost a leg while serving in the military.
Although there aren't many mass shootings in Thailand, gun ownership is widespread, as seen by recent events like the deadly attack at a nursery in October and the shooting at a Bangkok mall last month.