An attorney for Fox News reporter Jana Winter on Wednesday urged a state appeals panel to quash a subpoena seeking to force Winter to identify sources who leaked information to her about the case of Aurora, Colo., shooter James Holmes, arguing that she is protected by New York’s Shield Law for journalists.

Holmes opened fire in a movie theater on July 20, 2012, during a screening of “The Dark Knight Rises,” killing 12 people and injuring 70. He has pleaded not guilty by reason of insanity, and his trial is set to begin early next year.