Editor's Note: This story was amended to include a paragraph about Child Protective Services.
A woman was arrested after a baby was left unattended in a vehicle at Mall in Temecula Friday.
It was unclear whether she was the child's mother.
Riverside County sheriff's Deputy Joshua Morales said the event occurred about 2 p.m.
A woman spotted the child in the vehicle and no one around; she found that the door was unlocked and took the baby out, Morales told Patch.
The woman put the child in her own vehicle with the air conditioning on -- temperatures in Temecula Friday reached triple digits -- and called police dispatch, Morales said.
When deputies arrived, there was still no sign of an adult but after waiting a while, a woman returned to the vehicle with and was arrested and booked on suspicion of child endangerment, Morales said.
The woman was allegedly carrying a Starbucks coffee and shopping bags; her name was not immediately released.
Sheriff's officials said that Child Protective Services would be notified but it was not immediately clear if the baby was taken into protective care or turned over to a family member.