An arrest affidavit indicates a 12-year-old boy shot and killed 15-year-old Tra’von Edwards on Saturday and then contacted his mother, who altered the crime scene in a wooded area in Melville before calling authorities.

Twanda Louray Washington, 33, of Melville, was booked Tuesday into St. Landry Parish Prison on obstruction of justice and contributing to the delinquency of a juvenile. Her 12-year-old son was arrested for negligent homicide, along with his 15-year-old brother, who was booked on obstruction of justice.

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