A 19-year-old man accused of an apparent road rage shooting near the Otay Ranch Town Center pled not guilty to charges that include attempted murder during an arraignment hearing Tuesday. 

Authorities believe Gillio Calais Repetto, of Bonita, shot at a 34-year-old motorist four times during a road rage confrontation last week near the Otay Ranch Center in Chula Vista, striking the victim on his bicep and hand. 

The shooting occurred around 10 a.m. at the intersection of Olympic Parkway and Town Center Drive when 19-year-old Serenity Renee Nieblas, the woman driving the vehicle with Repetto, according to Chula Vista Police Department Capt. Phil Collum. 

District Attorney Allen Brown alleged that the drivers were racing each other before stopping at the intersection of Olympic Parkway and Town Center Drive, where the prosecutor said Repetto and the victim got into a fistfight.

Brown said that at some point, Repetto reached for his waistband and said words to the effect of 'I'll kill you”. Repetto re-entered Nieblas’ silver Hyundai and allegedly opened fire in the car, which sped off.

According to police, the victim drove away after the altercation while calling 911. After reporting the shooting, he pulled over and waited for paramedics, who transported him to the hospital for non-life-threatening injuries. 

Brown alleged that Repetto and Nieblas also took part in a similar road rage incident in February in Eastlake, in which a victim was stabbed multiple times. Repetto allegedly got out of the vehicle to fight and allegedly threatened to kill the victim. 

The prosecutor alleged that the 19-year-old woman stabbed the victim eight or nine times during the fight. 

She is due to be arraigned on Monday. 

Prosecutors believe Nieblas was the driver and Repetto was the passenger in both incidents. 

San Diego Superior Court Judge Timothy Walsh ordered Repetto held without bail.

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