The infant, Royalty Bass, was last seen in New Haven County in Ansonia on Tuesday, April 26 with her mother Shameka Henri.
Henri failed to return the infant to her father after a custody visit, said Lt. Patrick Lynch, of the Ansonia Police Department.
Royalty is about 2-feet, 20 to 30 pounds with black hair and brown eyes.
She was last seen wearing a pink Minnie Mouse shirt and gray Minnie Mouse pants.
Henri could have taken the child to the Stratford area or out of state, Lynch said.
Anyone with information regarding this case is asked to contact the police department at 203-735-1885 or anonymous tips can be left at Tip411 at https://www.tip411.com/tips/new?alert_group_id=21553
Click here to follow Daily Voice Darien and receive free news updates.