A jury has found James Holmes guilty in the shooting deaths of 12 people in Colorado movie theater in 2012.
The verdict means the 27-year-old is eligible for the death penalty.
Jurors reached their decision Thursday after deliberating for about 13 hours over two days. They must now decide whether Holmes should be executed or sent to prison for life without the possibility of parole.
Holmes pleaded not guilty by reason of insanity, and his attorneys argued he was so addled by mental illness that he was unable to tell right from wrong at the time of the shootings.
Prosecutors maintained the attack was meticulously planned over months and Holmes knew what he was doing.