The Chicago Bears were required to cancel their practice Tuesday after violating NFL rules, according to ESPN's Courtney Cronin.
The Bears reportedly had live contact at their organized team activities in May, which is prohibited by the collective bargaining agreement.
NFLPA representatives witnessed the live contact during a regularly scheduled visit to the Bears' facility, per Cronin. After issuing a warning, the players association requested video from ensuing practices and saw more live contact.
The Bears are scheduled to return to practice Wednesday.
This article will be updated soon to provide more information and analysis.