Chicago Bears offensive tackle Tayo Fabuluje has been suspended without pay for the team's next four games for violating the NFL's policy on performance-enhancing substances.

“I was recently informed that I tested positive for an amphetamine after taking a supplement that did not list any banned substances on the label," Fabuluje said in a statement. "As a result, I will be serving a four game suspension. Although it was not intentional, and I would never knowingly take a banned substance, I recognize that I am ultimately responsible as an NFL player for everything that goes in my body. I sincerely apologize to my teammates, the Chicago Bears organization and our fans and can’t wait to come back and contribute to my team.”

The 2015 sixth-round draft choice will be eligible to return to the Bears' active roster on Dec. 7 following the club's game versus San Francisco on Dec. 6.

Fabuluje has appeared in four games this year in a reserve role. He was inactive for Chicago's 22-19 victory over the San Diego Chargers on Monday Night Football.

Meanwhile, Bears practice squad wide receiver Jalen Saunders has also been suspended four games for violating the league's performance-enhancing substance policy. Saunders is currently on injured reserve.

The Bears made a pair of additional roster moves Tuesday, elevating receiver Deonte Thompson from the practice squad to the active roster and signing tackle Martin Wallace to the practice squad.