ROCHESTER, N.Y. -- Charlie Tan, a 19-year-old accused of shooting his father to death inside his family's Pittsford home in February, appeared in court Thursday afternoon.

Tan is charged with one count of 2nd degree murder.

Deputies were called on Feb. 9 to the Tan residence on Coachside Lane for a domestic incident. Inside, police Jim Tan, 49, dead. Prosecutors said Jim Tan may have been killed anytime between Feb. 5 and 9.  

Defense Attorney Brian DeCarlois said he only received a one-page report from the Medical Examiner's office that doesn't give a timetable of Tan's death. 

Also at issue is a confirmation video that the prosecutors have obtained of Tan at a convenience store  in Cicero, N.Y., as well as Tan's statement he made to police the night of their arrival. 

Charlie Tan's attorney claims Charlie Tan, who is a student at Cornell, withstood years of abuse at the hands of his father. His attorney says he's living at home with his mom and brother and hasn't returned back to Cornell University.

DeCarlois said the statement is consistent with what they've said all along, but wants to make sure the statement was made on his on free will and wasn't coerced to do so. That statement and video will be brought up in Huntley and Wade hearings next month. 

"We have a job to protect every right Charlie Tan has and if we have a right to a hearing to bring live witnesses in to make sure that statement was, first, accurate, second of all, that it was provided in a way that wasn't coercive," said DeCarlois.

"Bottom line, we want to make sure what came out of Charlie Tan's mouth came out of Charlie Tan's mouth because he wanted it to. " 

"There is a time frame there that has been outlined in the indictment," said prosecutor Bill Gargan. "There's always an effort in response to the defense counsel to narrow that time frame and we would do it best we could in conjunction with the evidence we have and the proof we had."  

Gargan also says during the investigation, certain information was obtained from Cornell University in different forms, including information on a flash drive. It's information they plan to share with the defense. 

Many of Tan's friends attended Thursday's court proceeding.

The judge set a trial date for Sept. 14. Tan is due back in court June 17.