William G. Porter, one of six Baltimore city police officers charged in connection with Freddie Gray's death arrives at a side door, for a court appearance on Tuesday, Oct. 13, 2015 in Baltimore.  All six officers appeared before Judge Barry Williams, who is to determine whether their still undisclosed statements will be allowed at trial. (Barbara Haddock Taylor /The Baltimore Sun via AP)  WASHINGTON EXAMINER OUT; MANDATORY CREDIT

William G. Porter, one of six Baltimore city police officers charged in connection with Freddie Gray’s death arrives at a side door, for a court appearance on Tuesday, Oct. 13, 2015 in Baltimore. All six officers appeared before Judge Barry Williams, who is to determine whether their still undisclosed statements will be allowed at trial. (Barbara Haddock Taylor /The Baltimore Sun via AP)

The statements two Baltimore police officers made to investigators probing the death of Freddie Gray can be used at the officers’ trials, a judge ruled on Oct. 13.

All six officers appeared before Judge Barry Williams, who considered whether statements by two of the six officers would be admissible. The contents of the statements have not been publicly disclosed.

Officer William Porter, the sole officer to waive his appearance at a hearing last month, was also in court Tuesday. His trial, the first, is to begin Nov. 30.

The others facing charges are officers Edward Nero, Garrett Miller and Caesar Goodson; Lt. Brian Rice; and Sgt. Alicia White.

All face assault and reckless endangerment and misconduct in office charges. Porter, Rice, White and Goodson also face manslaughter charges. Goodson, who drove the police van in which Gray was critically injured, faces an additional charge of “depraved-heart” murder.

Williams also ordered prosecutors to turn over the rest of their investigative files to the defense by Oct. 28.

At the end of the hearing, the judge issued a gag order. He instructed the attorneys not to discuss the cases with people who are not involved in the prosecution or the defense.