A baby girl, who was believed to be just hours old, was found alive and healthy in a plastic bag on the side of an Indiana roadway, police said. The infant was discovered by a person walking a dog in Seymour, roughly 60 miles south of Indianapolis, just before 4 p.m. on Tuesday, police said.

The person found the baby girl near a fence about 20 yards off the road, police said. The newborn was immediately taken to a medical center where staff determined the baby was healthy. Seymour police Sgt. C.J. Foster said he had checked on the little girl at the hospital on Wednesday and that she was doing well. He added that police are still trying to identify the mother of the child.

The police released a statement highlighting the importance of Safe Haven laws, adding that the Seymour Fire Department currently has a Safe Haven Baby Box at Seymour Fire Station 3. The police department reiterated that Safe Haven Baby Boxes at fire stations enable individuals to surrender newborn children in a box that opens from the exterior wall of the station. If an individual opens the door to surrender the infant inside the box, a 911 call goes out and an alarm is sounded. After the door is shut, the child will be locked inside the box, and only fire and medical personnel will be able to retrieve the child.

Safe Haven laws, or Safe Surrender laws, vary from state to state, including how much time after birth a parent or guardian is allowed to surrender a child. In 32 states, parents or guardians have up to 30 days to surrender a child, Damien Johnson, director of communications of the National Safe Haven Alliance, told ABC News last week.

Individual state laws also vary regarding which locations are considered safe havens. In every state, a hospital is a safe location, however, some states also allow a child to be surrendered at a fire station or police station, Johnson said. The first Safe Haven law was enacted in Texas in 1999, and since then all states, as well as Washington, D.C. and Puerto Rico, have passed Safe Haven legislation, which has resulted in the rescue of more than 4,000 babies, according to the National Safe Haven Alliance. There is still, however, no federal legislation regarding safe havens, Johnson said.

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You can reach the toll-free crisis hotline at 1-888-510-BABY or get information on your state by clicking the map at nationalsafehavenalliance.org.