Police have concluded the mother of the infant had no criminal intent and did not knowingly endanger the child.
Investigators say the mother had researched safe haven laws on the internet and was mis-informed that Pennsylvania laws apply to fire houses.
In Pennsylvania, hospitals are the only facilities covered by "safe haven" laws.
The mother's identity was discovered after the widespread airing of a 911 call made the morning the baby was found.
"Baby Jack," as he's now being called, is in custody of Montgomery County Children and Youth.
The baby was found just after 3:00 a.m. Sunday by police, after an anonymous woman called 911 to say the baby was left in front of the Plymouth Fire Company on Colwell Lane.
Plymouth Police responded to the fire company and located a newborn baby boy wrapped in a shirt.
The baby was transported to Montgomery Hospital where it was determined that the infant was probably no more than two hours old.
Investigators do know the call came from a gas station pay phone about a half mile from the fire station.
The child is healthy, and doctors says he was carried to term.
He is 19 inches long, weighed 6 pounds, 12 ounces.
Click here to get the latest Philadelphia news and headlines from across the Delaware and Lehigh valleys.