The family of a career Navy sailor killed last week in an alleged road rage incident in San Diego was reeling Monday from their loss as his alleged killer was charged with murder. 

“It’s just a huge loss to the country, to his family, to his friends,” said Kathy Cramer, the mother of one of U.S. Navy chief petty officer Zachary Buob's friends.

Police say Darla Jackson, 24, of Imperial City, ran Buob down, knocked him off his motorcycle and then drove over him Thursday during rush hour. Buob, 39, of Santee, died hours later at a local hospital.

The pair got into an argument as both drove on I-5 in Chula Vista, Fox 5 said. California Highway Patrol said Jackson, driving a black Nissan Altima, rammed Buob’s red Ducati from behind on a highway filled with rush-hour traffic, and then ran him over. She was charged Friday with murder.

Buob, 39, was assigned to the Naval Special Warfare Command, and had been in the Navy for approximately 20 years.

Jackson was booked into jail and is being held without bail pending an arraignment on June 2. The station spoke to Jackson’s mother, who said her daughter had been wrongly accused. 

The woman said her daughter, the mother of a 3-year-old, was the victim because the motorcyclist was driving erratically.

“The motorcycle was trying to cut through some cars and for whatever reason he kicked the side of my daughter’s car,” the woman said. She said her daughter took off after the motorcycle to get the driver to pull over.

“She went on to follow him trying to get information for the insurance and what have you,” said Margie.

William Touch, a witness who recorded a video of the car and motorcycle moments before the crash, gave a different account of the incident.

Touch told NBC 7 that he witnessed the vehicle "sideswiping" the motorcycle three times.

Authorities asked any witnesses to the crash or what led up to it to call CHP traffic investigator Brad Clinkscales at 619-220-5492.