ENGLEWOOD, Colo. (AP) — Faced with a possible four-game suspension for violating the NFL’s drug policy, Broncos linebacker Von Miller insists he did nothing wrong. He said through Twitter that he is confident “this’ll be resolved fairly.”

A person with knowledge of the situation told The Associated Press that Miller will miss four games for violating NFL drug policy, pending an appeal. The person spoke to AP on condition of anonymity because the league hasn’t announced any punishment.

Miller went to his Twitter account and said he was seeing reports about the suspension. He tweeted: “I know I did nothing wrong. I’m sure this’ll be resolved fairly.”

The Broncos open training camp Thursday and Miller is expected to be in attendance.