After reviewing the video and talking to witnesses, airport police now believe that it's possible the woman gave birth to the baby in a restroom in Concourse B shortly before 9 p.m., then took the baby to the family restroom in the baggage claim area to clean up, according to the release.
A custodian from the airport says she discovered pools of blood on the bathroom floor shortly after the woman left.
A baby believed born in a Tucson International Airport restroom was left behind with a note that said, "I'm sorry".
The child was found with a handwritten note, which mentioned the woman wanting a better life for her baby. I just want what is best for him and it is not me.
According to an airport spokeswoman, the baby appears to be healthy and is now in the custody of the Arizona Department of Child Safety.
Ms Quintana asked the woman if she was OK, and the mother told her the baby, who was naked and had his eyes shut, was three months old before hurrying away. The custodian later found bloody clothes stuffed under paper towels in the trash can. She is unable and unfit to take care of me. The first part of the note appeared to be written from the newborn's perspective.
The Tucson Airport Authority said investigators still need help to identify the woman. The mother may still face criminal charges, given that the airport is not a designated location.
"We would like to know who she is but we've exhausted our resources", Butler said. "There is a lot of fear", said Kimberly Marshall, a nurse practitioner and co-founder of the Arizona Safe Baby Haven Foundation.