Brandon Michael Acosta could go to trial in the Superior Court of Guam in early October, Judge Vernon Perez said.
Acosta, who was indicted on charges of murder and rape in the killing of 15-year-old Timicca Nauta, appeared in court on Thursday.
The teen's family members attended the hearing.
The hearing was held to discuss the defendant's pending motion to suppress evidence in the case, which includes clothing that police seized from his Dededo home.
The government contends police officers were given consent to seize certain pieces of clothing and slippers and were entitled to seize them.
However, defense attorney William Pole had argued police did not have consent.
Assistant Attorney General Leonardo Rapadas told the court he would need at least a week to review the latest response filed by Pole.
In that response, Pole clarified that the shorts in question are actually gray. He filed the response after the prosecution said they did not have any brown shorts belonging to the defendant that were confiscated at the scene.
The motion will be discussed again when Acosta returns to court for another hearing on Aug. 21.
Judge Perez told Acosta he anticipates the jury selection and trial would begin in October.