(Sun) -- The Florida school shooter left a chilling comment on a YouTube video about another mass shooting last year promising a copycat attack, it has been claimed.
Nikolas Cruz, 19, allegedly massacred 17 people and injured dozens more in a bloody gun rampage at his former school in Parkland, Florida, yesterday.
It has since emerged the teen’s social media pages were filled with disturbing content, with ex-schoolmates claiming they "knew he would shoot up the school".
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And it has now been claimed that the killer - who has since been charged - posted an ominous comment on a YouTube video about another infamous massacre.