Casey Thomas, an Oakland A’s prospect and graduate of Desert Vista High School, died in Phoenix, the team announced Tuesday.

There were no details immediately available about the circumstances surrounding Thomas’ death. 

Thomas, 24, was the son of A’s pro scout Tom Thomas.

Stan Luketich, who coached Thomas at Desert Vista, was devastated by the news of his death.

“It’s just terrible,” Luketich said. “It’s tragic any time a young person dies.

“Casey was like a gym rat. He understood baseball better than most high school kids do. He understood the game well. We just talked a couple of months ago. When he went to college, he turned some things around. He really became a good student and continued to play.”

The team said Thomas was in extended spring training with the A’s when he died.

“We were devastated to hear of this tragedy within the A’s family,” Bille Beane, the A’s executive vice president of baseball operations said in a statement. “Our hearts go out to Tom and his family on their loss. Casey was a wonderful young man and teammate, and will be missed by all in the A’s organization.”

Thomas spent the 2016 season on the A’s Arizona League team and hit .258 with 18 RBI in 37 games, according to the team. 

Thomas played for Gateway Community College after graduating from Desert Vista and moved on to play at Texas A&M-Corpus Christi before the A’s took him in the 34th round of the 2016 draft.

azcentral sports high school sports reporter Richard Obert contributed to this article.