Document: Younger brother witnessed mother stab, kill 8-year-old sister in Detroit home

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The younger brother of an 8-year-old girl told children's advocacy workers that he watched his mother stab his sister to death in their Detroit home.

Semeria Greene is charged with murder in the Dec. 30 slaying of her daughter, Tameria.

A petition filed Monday in Wayne County Juvenile Court on behalf of the state Department of Human Services says Tameria's 4-year-old brother witnessed her death.

The petition was filed in a neglect case involving Greene's four sons. It says the boy told child advocacy workers his mother "had a big knife and cut his sister and his mother killed Ti-Ti."

The state wants to end Greene's parental rights to her other children. A pretrial hearing is set for Jan. 24.

Greene is being held without bond.