A former Madison police officer abused his position of authority by pursuing a sexual relationship with a 15-year-old girl in an “astonishing” breach of his oath as an officer and the trust of a family who supported him, a Dane County judge said Thursday, sentencing the ex-officer to a year in prison.

But with credit for time that he spent in custody following his arrest in 2019, Morris A. Reid, 60, will serve just more than two months in prison before he is released to serve five years of extended supervision.