Australian students were evacuated from their school on Wednesday when an 11-year-old brought a hand grenade to class for show and tell.
Students at the Hunter Christian School in Newcastle were taken to a near by park while police and bomb appraisal technicians examined the hand grenade.
Police have indicated the grenade resembles a World War Two "pineapple" type and is inactive.
Classes at the school were cancelled and students sent home as a precaution.
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