Caleb Swanigan, a famed standout at Purdue, suddenly died. He was 25.

The Purdue Men's Basketball's Twitter page announced the tragic news to fans, saying that Swanigan died on Monday.

Purdue coach Matt Painter also released a statement to express the team's sadness following the tragic event.

"The Purdue basketball family is deeply saddened and devastated at the loss of Caleb Swanigan. Caleb was a very thoughtful individual and a gentle soul who excelled both on and off the court. He made a huge difference in everyone's lives that he touched and he will be greatly missed," he said, per NBC Sports.

The local news outlet in Fort Wayne, WANE 15, received a copy of the report from the Allen County Coroner's Office. It confirmed that Caleb Swanigan died of natural causes at the age of 25.

However, the revelation about his cause of death raised questions as fans could not believe how a healthy, young athlete suddenly passed away.

Caleb Swanigan's Death Suspicious?

On Twitter, fans asked how natural causes led to Swanigan's death.

For what it's worth, the late athlete sparked concerns over a year ago after a viral photo of him gaining weight emerged. At that time, even Damian Lillard warned people not to question Swanigan's life issues as no one knew what he went through to have such a drastic change.

"If you gone post this sh*t with real concern, that's cool. But don't ask 'how does one go from 'this to that' ... he clearly having real life issues. That's how... you don't know WHAT it is he's going through to cause a drastic change . If you gone be supportive then do that but don't ask no sh*t like that like it's not possible when you naturally a big dude and go down a dark road," he said.

Fans at that time asked for everyone's prayers amid the basketball star's tough time in life.

In 2015, a Bleacher Report article revealed that Swanigan's life in Utah was difficult, especially since he saw people shoot heroin in the bathroom and leave needles.

Meanwhile, Swanigan told ESPN that he stayed in homeless shelters when he was young. He also opened up about his father's struggles with crack-cocaine addiction.

He was eventually adopted by Roosevelt Barnes before moving to Fort Wayne.