NEWTOWN, Conn. - Investigators working on the mass school shooting in Connecticut say anyone spreading misinformation on social media will be investigated.

Lt. Paul Vance of the Connecticut State Police says people on social media are spreading misinformation and even posing as the suspect. Vance stressed that this behavior is a crime and that authorities will prosecute anyone identified doing it.

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Meanwhile, Connecticut Gov. Dannel Malloy says Adam Lanza, the 20-year-old suspect, shot through an entrance into Sandy Hook Elementary School with a rifle. Malloy says Lanza shot himself as first responders began to arrive at the scene.

Twenty children and six adults were killed at the school. Lanza's mother, Nancy, was also found dead at her Newtown home.