Two women were arrested Wednesday after police said they left a 3-month-old boy in a hot car at El Con Mall and went to shoplift items.

Angelica Tapia, 20, and Vanessa Luna, 23, were arrested and are facing shoplifting charges. Tapia, who was babysitting the child for a friend, also faces child abuse, said Sgt. Pete Dugan, a Tucson Police Department spokesman.

The women were booked into the Pima County jail.

While the women were inside the mall, two Good Samaritans returning to their vehicle heard a baby crying nearby and went to the baby's rescue, said Dugan.

They heard cries coming from a vehicle, which had its windows partially rolled down. One woman put her arm inside the vehicle and unlocked the door. She found the baby under a sweatshirt, Dugan said.

Another person passing in an air-conditioned vehicle offered the women and the baby shelter, while police and firefighters arrived, said Dugan. One of the women called 911 at 2:40 p.m. 

The boy was treated by Tucson Fire Department paramedics and taken to a hospital for treatment, Dugan said.

The baby, who is fine and in state-protective custody, was treated for dehydration, Dugan said. "It was well over 100 degrees in the vehicle, and doctors said if the baby would have been left longer in the vehicle he may have suffered major injury."