Swanigan died of natural causes, the Allen County Coroner’s Office told WANE-15 without elaborating.
Swanigan, a 2017 first-round pick of the Portland Trail Blazers out of Purdue University, played three years in the league for the Blazers and Sacramento Kings.
The Purdue basketball program mourned his death on Twitter.
Swanigan was Indiana’s Mr. Basketball in 2015 and stayed in state to play for the Boilermakers, earning first-team All-American honors his sophomore year, ESPN noted. He entered the NBA draft and was chosen 26th overall.
Swanigan was homeless for a time as a child before he was adopted. He organized a fundraiser to fight homelessness in 2019, WANE-15 reported. He eventually finished his degree in education from Purdue.