SYRACUSE, N.Y. — Charlie Tan appeared in federal court on Wednesday for a pretrial hearing in Syracuse to determine if previous statements can be used in his upcoming trial. 

The suppression hearing was adjourned until April 11.

The judge has asked the prosecution to submit a case study in the next two weeks that shows examples of statements being permitted as evidence despite Miranda rights not having been read by the police.

The Pittsford Mendon graduate and former Cornell student was charged with murdering his father, but had those charges thrown out by a judge.

Now, more than two years later, he's charged in connection with the purchase of the gun used to kill his father.

The evidence submitted by the prosecution on Wednesday included incident reports, 911 dispatch transcripts and statements from two of the responding officers that interacted with Charlie Tan the night his father was killed. 

According to past testimony, Tan allegedly told deputies at the scene of the homicide in Pittsford that he "had to do it" because his father was going to kill his mother. 

During his first trial, Tan's attorney's argued those statements were obtained prior to him being read his Miranda rights. 

The jury was unable to reach a verdict and the murder charges were dropped after a judge ruled there was a lack of evidence.

This time around, Tan is accused of being involved in the illegal purchase of the shot gun used to kill his father Jim, in his Pittsford home, back in 2015.

The weapon was purchased at a Cortland County Walmart by one of Tan's friends and Tan is accused of arranging the purchase to skirt gun laws. 

Judge Andrew T. Baxter will recommend what to do with the evidence and hand the case over to Judge Frederick J. Scullin Jr., who will preside over the trial, which is expected to begin in June.