Allegations of sexual assault against an heir of Thailand's prominent Singha beer fortune have surfaced, involving his older brother. This scandal has brought one of the country's wealthiest families into public scrutiny.

Allegations of sexual assault by an heir to a beer fortune against his own older brother have thrust one of Thailand’s richest families into an uncomfortable spotlight, stunning a public unaccustomed to seeing prominent households air their affairs in public. The scandal erupted last week when Siranudh Scott, better known as “Psi” – a fourth generation heir to the Bhirombhakdi family’s beer-to-real estate empire – shared allegations of historic sexual abuse by his older brother, Sunit, on...