When police arrived at the home of Marsha Tennell about 5 a.m. Sunday, they found her son covered in blood.
They also found the corpse of the 53-year-old woman in her bedroom, dead from blunt-force trauma.
Eric Deshayn Tennell, 33, eventually admitted to cops he killed his mother, police say.
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The incident happened in the Third Ward, in the 3000 block of Francis. No motive was given for the killing.