Source : Hernandez pleaded not guilty in September to a charge of first-degree murder . Grand jury that handed up murder charges considers gun trafficking allegations . Source : Former college coach Mike Pouncey served subpoena after game Sunday . Second case of weapons trafficking across state lines , second source says . Aaron Hernandez also is charged with murder in the June death of Odin Johnson .
Source : Grand jury that handed up murder charges considers gun trafficking allegations . Source : Former college coach Mike Pouncey served subpoena after game Sunday . Second case of weapons trafficking across state lines , second source says . Aaron Hernandez also is charged with murder in the June death of Odin Johnson .