A man in Memphis , Tennessee, will spend the rest of his life behind bars for killing his newborn daughter and her mother in "heinous" acts of violence.

Brandon Isabelle, 28, was sentenced to consecutive sentences of 51 years for murdering 27-year-old Danielle Hoyle and their newborn child, Kennedy Hoyle, the Shelby County District Attorney's Office announced. He was also given an additional 45 years — split between the two convictions — for aggravated child neglect and especially aggravated kidnapping. He had pleaded not guilty.

Prosecutors indicated that the latter 22.5-year sentences held symbolic significance: one year for every hour young Kennedy was alive.

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