"I am the Joker," said the gunman was arrested in Colorado

The principal suspect in causing the death of at least 12 people at the premiere of the movie Batman in a movie theater in Colorado said that "the Joker was" the officers who arrested him, according to Police Commissioner Ray Kelly in New York. The statement made ​​authorities suspect that James Holmes, 24, suffers from dementia. The information is from ABC News . The police commissioner said Holmes dyed her hair so as to resemble the Joker, the villain of the second film in the trilogy by Christopher Nolan. The suspect opened fire at 30-minute film, and before leaving, caused a cloud of smoke with a gas pump. He acted alone and knew the time to shoot, officials said, because the shots were fired during a scene exactly the shots. The attack was the most serious occurred in the United States over the past five years, and it happened just 20km from the site of the Columbine massacre, where two students killed 13 others in 1999. At least 71 people were killed and 80 wounded in the attack.