Fairfield police have arrested a woman and charged her with manslaughter in connection with the death of a 4-month-old baby at her unlicensed daycare in March.

On March 22, police responded to 63 Edgewood Road to investigate the report of an unresponsive infant.

The baby was transported and pronounced dead at St. Vincent's Medical Center.

Fairfield Police found Carol Cardillo, 53, lived in the home and was operating an unlicensed daycare facility.

On June 4, the office of the chief medical examiner reported that the baby died of acute diphenhydramine intoxication. Police said diphenhydramine is an antihistamine drug that should not be administered to children under the age of 2 years old.

Cardillo was arrested for second-degree manslaughter because the drug had to have been administered to the 4-month-old baby. She was also charged with second-degree reckless endangerment and risk of injury to a minor.