(CNN) -- An evidence technician with the Jacksonville, Florida, Sheriff's Office testified Saturday that there were nine bullet holes in the Dodge Durango where Jordan Davis was shot to death.
In a rare weekend court session, jurors in the Michael Dunn trial heard testimony from Det. Andrew Kipple about the bullet holes in the vehicle and shell casings collected at the crime scene.
Kipple testified there were three bullet holes in the rear passenger side door, where Davis, 17, was seated. When asked by State Attorney Angela Corey whether Kipple found a weapon inside the vehicle, he responded "No."
The case has drawn national attention because of parallels with the Trayvon Martin case. Martin was the unarmed black teen in Sanford, Florida, shot dead on February 26, 2012.
Dunn has admitted he gunned down the 17-year-old Davis in a parking lot of a gas station during a dispute over loud music on November 23, 2012, but claims the shooting was in self-defense.
Dunn has pleaded not guilty to first-degree murder and three counts of attempted murder related to three teens -- Leland Brunson, Tommie Stornes and Tevin Thompson -- also in the vehicle with Davis.
On Saturday, defense attorney Cory Strolla questioned Kipple about the way the evidence was processed at the scene. Strolla also suggested there may have been time for a weapon to be dumped.
Davis' friends testified Friday they drove away from the gas station to a nearby parking lot to check on Davis. The teens said they later drove the vehicle back to the gas station so they could get help. Bystanders pulled Davis out of the vehicle and began CPR.
Dunn told police he was in town with his girlfriend for his son's wedding. Dunn told authorities that after the shooting, he drove to a bed-and-breakfast and ate pizza before he returned to his home where he was later arrested.
In an interview with police less than 24 hours after the incident, Dunn said he wasn't looking for trouble.
He told police he thought he saw the barrel of a shotgun or a stick in the teens' SUV and that's why he acted in self-defense.
"I've never been so scared in my life," he said in the police interview.
Acting Circuit Judge Russell Healey chose to hold court Saturday at the request of the 12-person jury. Court will not be in session on Sunday.
If convicted, Dunn faces life in prison without parole.
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