Mass shooting 'reignites debate over mental illness'

College schools in California have continued their vigils and prayers for those who were killed by British born killer Elliot Rodger.

Families have again called for the mass shootings to end, reigniting a debate about mental illness and gun laws across America.

ITV News' Washington correspondent Robert Moore reports:

More: British-born gunman 'convinced US authorities he was no threat'

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British-born gunman 'convinced US authorities he was no threat'

British-born gunman Elliot Rodger, who stabbed and killed his US college room-mates before embarking on a shooting rampage, convinced authorities that he was not a threat during a welfare check to his home last month.