The youngest person charged over the Christchurch mosque shootings video has been returned to custody after allegedly breaching his bail conditions.
The 16-year-old, who cannot be named for legal reasons, first appeared in the Youth Court in Christchurch in March.
The Herald understands police were alerted after concerns about his behaviour.
The boy's school cannot be named and his principal declined to comment, referring inquiries to police.
He was initially charged with distributing objectionable material from the mosque terror attacks and was held in custody for two months.