Detectives claim Wilson shot and killed Julian Barajas north of Auberry last week while he was showing a blue Chevy Blazer to Wilson. Police said Barajas thought Wilson to be a prospective buyer.
Investigators believe Wilson, Alaniz and her son are still in the Fresno County area, and are in the same 1999 Chevy S10 Blazer stolen during the murder.
The license plate number is 4FVJ479.
Investigators consider Wilson to be armed and dangerous.