The mother of a 4-year-old Kentucky girl who has not been seen in more than a year was arrested on Sunday with her boyfriend.

According to WDRB, Catherine McKinney and Dakota Hill were arrested in Thomas County on a warrant out of Shelby County for custodial interference. The couple is allegedly not cooperating with the ongoing search for the woman’s daughter Serenity McKinney, who was reportedly last seen on Christmas Eve of 2020.

Serenity McKinney’s grandmother told The Sun said there was no sign of the 4-year-old when police arrested her mother. She reportedly last spoke on the phone with her granddaughter a few weeks before Father’s Day of 2021.

The missing girl’s grandfather recently filed a missing persons report in Shelby County after not seeing her for an extended period of time.

Shelby County police said they are also unsure of Serenity McKinney’s last whereabouts, but they believe she was in the area of Shelby, Jefferson, or Bullitt counties. Police Captain Blake Lisby told WDRB that they suspect she is in danger “based on the timeframe on how long it’s been since she’s been seen and nobody can seem to produce her whereabouts.”

Lisby also alleged that Serenity McKinney’s mother has refused to reveal where her daughter is.

Serenity McKinney has blue eyes, blonde hair, and possibly has a birthmark on her stomach, according to police.

Anyone with information regarding her whereabouts is asked to call the Shelby County Sheriff’s Office at 502-633-4324 or 502-633-2323.

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[Featured image: Serenity McKinney/Shelby County Sheriff’s Office; Catherine McKinney/Thomas County Sheriff’s Office]