DANVILLE, Ky. (AP) -- A 12-year-old boy and his stepfather have been arrested for conspiring to kill the boy's biological grandparents.

The Boyle County Sheriff's Office received a call Saturday night expressing concern that the boy was planning to kill his grandparents.

The sheriff's office says the boy, who lived with his grandparents, was taken into custody then and placed in a juvenile detention center.

His stepfather, 38-year-old Kenneth Brown, was arrested Tuesday night. Brown is charged with conspiracy to commit murder.

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