The New England Patriots have lost two days of organized team activities this spring due to a violation of the NFL’s offseason rules, according to ESPN’s Mike Reiss.

The team canceled Thursday’s OTA, which was going to be the first attended by reporters this spring, unexpectedly Wednesday. A second OTA next week was also taken away.

It’s unclear what rule the Patriots broke specifically. They will not practice on May 30, and will instead resume OTAs next Wednesday. The team has just six more practices now before three-day mandatory minicamp starts on June 12.

The Patriots had 10 OTAs on their schedule this offseason. The practices, which are voluntary and do not allow any contact, are monitored by the NFL Players Association for possible rules violations.