An Amber Alert was issued Tuesday for an 8-month-old boy who authorities said was kidnapped with his mother from their Central Valley home by the boy's father.
Signs along all California highways were being activated Tuesday morning.
Sebastian Mosqueda and his mother Monserrat Caracoza, 18, were abducted around 2 a.m. from Porterville by Pedro Mosqueda, 23, according to the Tulare County Sheriff's Office.
The boy's kidnapping initially prompted an Amber Alert only in Kern, Tulare, Fresno and Kings counties, but the California Highway Patrol said it went statewide by midday.
Mosqueda was last seen driving a red, 1991 Honda Civic with California license plate number 5VOY539, according to authorities.
"The mother led the chase and ended up in the vehicle," Douglass said.
He said the woman's parents, who were staying at the house, heard yelling and called authorities.
A motive for the abduction has not been released.
Mosqueda was wanted on two warrants alleging domestic violence, Douglass said.