Titans linebacker Ryan Fowler was informed via letter last month that he could face a four-game suspension for violation of the NFL’s policy on anabolic steroids and related substances.

He denied using steroids at the time, and now his lawyer is asking the league to answer some questions.

“I’ve asked the NFL to do two things: One is to give any support or information backing up that initial threatening letter, and the NFL has refused to give any information whatsoever,” attorney Peter Ginsberg said. “I’ve also asked the NFL to investigate who at the NFL leaked the content of that initial letter.”

Ginsberg adds that he and Fowler have “heard nothing of any substance” from the NFL since the day they found out that the league was looking into allegations that Fowler used steroids.

The convicted steroid dealer David Jacobs said in May that he had some connection with Fowler, although it’s not clear exactly what that connection was. Jacobs committed suicide in June.