The girl was discovered wrapped in a blanket outside a house in Ibsen Walk on September 28 last year.
Despite several appeals, the mother has still not come forward.
A police spokesman said the investigation is likely to be filed.
Mother of abandoned Corby baby has not come forward one year on
The mother of a baby found abandoned in Corby has not come forward after more than a year since the incident, police have confirmed.
By The Newsroom
Friday, 7th October 2016, 4:48 pm
Updated Tuesday, 25th October 2016, 8:52 pm