DORAL, Fla. -- A South Florida disc jockey has been charged with murder in the death of an FIU freshman after he drove to the Miami-Dade Police Department in Doral with the dead victim in his car, police said.

According to investigators, 30-year-old Juan Carlos Portieles confessed that he choked his girlfriend to death during an argument. He then told officers her body was inside his car parked in the police parking lot, investigators said.

Portieles also admitted that he drove around for hours with the victim's body in the passenger seat before turning himself in to police, according to investigators.

The victim was identified as 18-year-old Jaclyn Torrealba, a recent graduate of Braddock Senior High in Miami.

School friend Alberto Muñoz told Local 10’s Julie Summers that Sunday night he received text messages that Torrealba was missing.

"To find out today what happened is just shocking. Why does this happen to great people?” Muñoz asked.

The Torrealba family was too distraught to speak Monday evening. A sign on the family’s front door asked the media privacy at "this most difficult of times."

"Jaclyn was a wonderful young woman who did not deserve this. She will live in our hearts forever," the note read.

No one answered the door at Portieles’ home in Hollywood on Taylor Street Monday evening. He is a disc jockey known as “Seasunz,” according to police.

Torrealba father, Pablo, is a science teacher at Braddock Senior High.

Portieles was taken to Jackson Memorial Hospital, where he was held in an area designated for inmates who are mentally or physically injured.

On Tuesday morning, he appeared in bond court where a judge denied bond. A public defender has been appointed to him.