(New York Post) He was dark and disturbed, a deeply troubled boy from a wealthy family who unnerved his neighbors and classmates.

Mass murderer Adam Lanza, 20, was a ticking time bomb, people who knew him told the Daily News.

“This was a deeply disturbed kid,” a family insider told the Daily News. “He certainly had major issues. He was subject to outbursts from what I recall.”

Lanza, who friends and officials said suffered from Asperger’s syndrome or a personality disorder, had a tortured mind.

He was socially awkward and at times unstable, but also extraordinarily bright.

“He was smart,” the insider said. “He was like one of these real brainiac computer kind of kids.”

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