Almost three years ago, a boy living in South Seattle with his father, stepmother, and stepbrother, was accidentally shot at home by his stepbrother, who was handling a gun. The stepbrother had, it seems, taken a gun from his father’s collection, brought it to school, and traded it for the gun that eventually killed his sibling. He pleaded guilty to manslaughter, and was sentenced to home detention [pi].

Now, the boy’s mother has filed suit against both the boy’s Seattle family and the Highline School District. The court documents claim that the school district had a flourishing gun trade that officials didn’t try to stop. The father is being accused of failing to secure his guns.

No trial date has been set yet, but this seems like an unexpected twist in an already sad story.