Austen was a bright and vibrant boy who injected life into everything he touched. His energy and creativity will be missed every day by all who met him and by those who did not have the privilege to meet him."
The family is planning to set up a foundation in Austen’s name to help improve the lives of other children.
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Hunt accused companies of "turning a blind eye" to a generation of children "exposed to harmful emotional side effects" of social media.
Sunday's weather for the west of the region
Sunday's weather for the east