Families reacted with fury after a friend of the teenage gunman who killed 10 people at an Indian reservation school was sentenced in secret for his role in the massacre.

THE investigation of a shooting spree that left nine people and the gunman dead on a Minnesota Indian reservation took a new turn when a source familiar with the probe said the tribal chairman's teenage son was arrested.

A teenager has been arrested in connection with last week’s shootings on a Minnesota Indian reservation, according to a police source.