A federal judge is allowing key parts of a lawsuit against Baltimore State's Attorney Marilyn J. Mosby, brought by five of the six police officers charged in the death of Freddie Gray, to move forward, reports the Baltimore Sun .

U.S. District Judge Marvin J. Garbis ruled that claims including malicious prosecution, defamation, and invasion of privacy can move forward against Mosby and Baltimore City Assistant Sheriff Samuel Cogen, who wrote the statement of probable cause.

Mosby's attorneys had said she has absolute prosecutorial immunity from actions taken as a state's attorney. But Garbis noted that her office has said it conducted an independent investigation.

"Plaintiffs' malicious prosecution claims relate to her actions when functioning as an investigator and not as a prosecutor," Garbis wrote.

Other counts, such as false arrest, false imprisonment and abuse of process, were dismissed, as Garbis had signaled he would do at an October hearing. All claims against the state were also dismissed.

Three of the officers charged in the April 2015 arrest and death of Gray were found not guilty of all charges by a judge, and prosecutors dropped charges against the remaining three officers last July.

David Ellin, an attorney representing Lt. Brian Rice, said that barring a reversal on appeal, the ruling means the officers' attorneys will begin the discovery stage, which includes deposing Mosby and others involved in the investigation.

Ellin said he expected that Mosby's attorneys will appeal. He said he wouldn't be surprised if the case reached the U.S. Supreme Court because of the questions it poses for prosecutors who take a more active role in investigations.