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DEVELOPING: Mom found dead in Arizona home, 14-year-old son charged with murder

Police in Arizona have arrested a 14-year-old boy for killing his mother on Sunday.

The Pima County Sheriff’s Office said in a statement that Tiana Keen, 45, was pronounced dead at a residence in Marana. Keen’s son was taken into custody on suspicion of second-degree murder, according to the Arizona Daily Star.

Keen was reportedly found with obvious signs of trauma, but authorities have not publicly revealed a cause of death. Police said Keen and her son were visiting the Marana home from out of town when the slaying occurred.

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It is not immediately known whether the unidentified 14-year-old will be tried as an adult.

This is a developing story. Check back with CrimeOnline for updates as they are made available.

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[Featured image: Tiana Keen/Facebook]