Authorities Confirm Video of Man Playing Game is Sandy Hook Shooter Adam Lanza
Months before carrying out the heinous attack at Sandy Hook Elementary School, Adam Lanza was filmed playing a game in a movie theater.
Authorities have confirmed that a video showing a man dancing on a video game on his own at an arcade is Sandy Hook Elementary School shooter Adam Lanza.
Read: Teen Kalamazoo Victim Miraculously Pulled Through After She Was Prepped for Organ Donation
In the footage, which was uploaded to YouTube six months before the 2012 attack, Lanza is seen playing Dance Dance Revolution at a movie theater arcade near his home in Danbury, Connecticut.
The 20-year-old was reportedly obsessed with the game, sometimes spending 10 hours a day dancing to the video.
The video was first shared in June 2012 but authorities have now confirmed that it is indeed Lanza.
In the video, the people filming can be heard talking and laughing. It is unknown if any of the laughter or discussion is about the young man.
Read: Read: Cops: 15-Year-Old Boy Charged With Shooting To Death His 10-Year-Old Sister
Six months after it was shared, Lanza shot dead his mother before storming the Newtown elementary school. He killed 20 children and six female educators before turning the gun on himself.
When investigators searched his home, they found a copy of Dance Dance Revolution, along with several violent video games including Grand Theft Auto, Doom, Left 4 Dead, Call of Duty and the PC game School Shooter.
Watch: Family of Suspected Kalamazoo Shooter: No Words Can Express Our Disbelief
Trending on Inside Edition

Tennessee Nurse RaDonda Vaught Sentenced to Probation, No Jail Time for Fatal Medication Error
Crime
Strangers Band Together to Help Unconscious Driver Drifting Into Oncoming Traffic
Heroes
Two Suspects Criminally Charged in Florida After Boat Balloon-Popping Video Goes Viral
Crime
Police Release 911 Audio of Shannan Gilbert the Night She Went Missing in Gilgo Beach 12 Years Ago
Crime
Woman Accused of 'Gaslighting' Husband Into Thinking He Was Senile to Steal His Fortune
Crime