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The victim was with her friend and her friend's 4-year-old child at the time, who were not injured. The victim's friend managed to drive the victim two miles to a Ralphs parking lot.
Lonnie Ramos has been on the run after the alleged shooting and kidnapping, and officials are now worried that he may try to flee the country.
"They do have relatives at various locations in Southern California. There are some relatives outside of California. As a matter of protocol, the Border Patrol has been notified," said Orange County Sheriff's Department Spokesman Jim Amormino.
Authorities said the couple has had problems in the past, but there was no indication it would lead to something like this.
Lonnie Ramos is described as a white male, 6 feet, 3 inches tall, weighing about 180 pounds.
Authorities were searching for two vehicles: a red 1992 Porsche 944 convertible with California license plate number 4BWU827; a white 2004 Chevy Suburban with California license plate number 5LTC712. Lonnie Ramos is now believed to be driving a rented 39-foot purple-and-gold Fleetwood Providence motor home with the license plate number 5EGW556, the Orange County Sheriff's Department said.
According to Ramos's roommate of three years, Randy Jick, Ramos had a great relationship with his son. They had just spent a fun week together, Jick said.
However, his roommate admitted Ramos has been going through a tough time. He lost his job in sales a few months ago and hasn't been able to pay his bills. Jick said Ramos was involved in a bitter custody battle.
"They've been going through probably one of the nastiest custody battles I've ever seen. I mean, it's affected me between them two, and the pacing back and forth, and Lonnie, he's happy, he's sad, he's happy, he's angry, he's angry, he's sad, restraining orders, cops at our door, cops at her door, and I just finally got to the point where I was done," Jick said.
Jick urged Ramos to let the boy go unharmed, adding that he couldn't imagine Ramos would harm his son because he loves him too much.
Authorities said Ramos's ex-wife is expected to survive.
Anyone with information is urged to call the Orange County Sheriff's Department at (714) 628-7170.