Sandy Hook families 'will never know why it happened'

Police in the United States made clear this evening that families of the 26 victims of the Sandy Hook school gunman will never know why he shot them.

ITV Washington Correspondent Robert Moore reports:

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School massacre motive unclear

A report into the fatal shootings at Sandy Hook Elementary School in the US state of Connecticut has suggested that the gunman's motives "may never be answered conclusively". Adam Lamza killed 20 students, six staff and his mother.