Thane: A two-month-old girl was found left at the entrance of the residential building in the Thane Charang area on Monday.
Beat the marshal on the patrol assignment was told about the baby left at 6 am.
They found him crying and the milk bottle was kept next to him.
The baby was taken to the Chhatrapati Shivaji Maharaj hospital in Kalwa to be examined.
The condition is stable.
CCTV footage showed a man, accompanied by a six-year-old girl, leaving a baby near the building entrance, the source said.