ESPN CONFIRMED: Just In Boston Celtics power forward Jayson Tatum has been banned indefinitely from game activities as he tested positive of……

In a stunning development just weeks after the Boston Celtics clinched their 18th NBA Championship, ESPN has confirmed that Celtics star Jayson Tatum has been banned indefinitely from all team and league activities after testing positive for a banned performance-enhancing substance, league sources tell ESPN.

The NBA and the Celtics organization were notified late Monday night after a random off-season drug screening conducted by the league revealed the presence of a prohibited compound on the NBA/NBPA’s banned substances list. The substance in question has not yet been officially disclosed, but multiple sources indicate it is classified under anabolic agents.

Tatum, 27, was instrumental in Boston’s championship run and was expected to lead Team USA in the upcoming Paris Olympics. This suspension not only puts his Olympic future in doubt but could also severely impact the Celtics’ offseason plans, including looming contract negotiations and potential trades.

The Celtics released a brief statement early Tuesday morning:

“We are aware of the league’s findings involving Jayson Tatum. At this time, we are gathering more information and will have no further comment until the process is complete.”

NBA Commissioner Adam Silver is expected to address the issue during a press conference scheduled for Wednesday.

Tatum, who averaged 26.9 points, 8.2 rebounds, and 4.6 assists this past season, has not commented publicly. His agent declined to respond to ESPN’s request for comment.