A baby left sitting in his stroller on the cold streets of New York City is now safe thanks to a good Samaritan.

Michael Allen told WPIX that he was looking out his Harlem apartment window when he spotted a stroller in an empty park. Curious and a bit concerned about what might be inside, he went down to investigate.

Inside, Allen found a small baby boy, looking up at him with "eyes like a doe." The father of three said the baby was dressed warmly and had formula in the stroller. Temperatures that night were in the 30s.

After discovering the baby, Allen alerted nearby firefighters who took the baby — nicknamed "Sunday" — to Harlem Hospital. The baby has since been taken into the care of the Administration for Children's Services.

Allen visited the child on Monday with one of his own children's teddy bears, Allen told CBS New York. “He kept staring at me. His eyes were just piercing me like ‘I know it was you that got me out of this cold.'"

An 18-year-old woman believed to be the boy's mother turned herself in to police on Monday. Kenyetta Rowell has been charged with reckless endangerment and false reporting, CBS New York reports. The boy's father has not been charged, according to the New York Daily News.

State law allows for parents to leave their children 30 days old or younger at fire stations without fear of prosecution, NBC New York reports. In this case the baby was older than 30 days and not left in the care of authorities.

Yahoo News spoke with Christopher McKniff, press secretary for the Administration for Children's Services. He couldn't comment on the specifics of the case, but did say that whenever possible, authorities try to keep the child with a member of the immediate family.

Follow Mike Krumboltz on Twitter (@mikekrumboltz).