MIAMI (CBSMiami) – Trial is now underway for a Miami DJ accused of killing his girlfriend and then driving around for a day with her body in the front seat of his car.

Thursday morning opening arguments were delivered and then the state began to lay out it’s case against 33-year old Juan Carlos Portieles in the death of 18-year old Jaclyn Torrealba in October 2009.

According to the arrest affidavit, Portieles, also known as DJ Seasunz, got into a ‘heated altercation’ on October 9th in southwest Miami-Dade. The pair had reportedly going out for two years. Portieles beat, bit and finally choked Torrealba until she stopped moving, according to the report.

He then reportedly placed Torrealba’s body into the front passenger seat of his Toyota and drove to several friends homes to tell them what he had done.

His final stop of the day was the Doral headquarters of the Miami-Dade Police Department he turned himself in. He then led officers out to the parking lot where they found Torrealba’s body in his car.

Portieles, who was a well know DJ on the Miami club scene, is charged with second degree murder.