"This female got out of her auto, asked the man if he could help her and asked him to take her child", the police spokesperson said.
Initially, he thought it was some kind of animal before realising it was a baby girl.
The little girl was in onesie pyjamas with her umbilical cord still attached. Fuentes reportedly brought the baby inside and unzipped the onesie to warm her, and noticed the umbilical cord. The pair put the infant in the woman's vehicle where the heating was on, and discovered the uncut umbilical cord.
Pogue had instructed the woman to go to a fire station or to nearby Valley Children's Hospital to surrender the child safely, but that did not happen.
The Madera County Sheriff's Office said they are searching for the mother, who is accused of leaving the baby on the side of the road.
"The baby appeared to have been born during the night and is now being treated by the Valley Children's neonatal intensive care unit", said Pogue.
He immediately called 911 and waited with the baby until an ambulance arrived, fearful the little girl might be taken by the coyotes common to the area. Authorities are now looking for the newborn's mother.
The woman was described by Madera County Sheriff's Office as a "Hispanic female adult, possibly in her early 20's".
In California, parents or persons with lawful custody can safely surrender an infant within 72 hours of birth, no questions asked, under the Safely Surrendered Baby Law. Yahoo Lifestyle has reached out to the Madera County Sheriff's office for information on the baby and mother and will update this post when it responds.
Drop-off points include designated fire stations and hospitals.
An investigation has been launched to find out who abandoned the newborn baby.