Question: Who was the shooting suspect in The Dark Knight?
About the article "The Dark Knight Rises", section "Shooting in Aurora, Colorado".

Candidate passages:
On July 20, 2012, a mass shooting occurred at the Century 16 at Town Center at Aurora, during a midnight screening of the film "The Dark Knight Rises".
A gunman, dressed in tactical clothing, set off tear gas grenades and shot into the audience with multiple firearms, killing 12 people and injuring 58 others.
The sole suspect is James Eagan Holmes, who was arrested outside the cinema minutes later. 
In the days following the attack, several people around the U.S. were arrested for threats and suspicious activities at or near screenings of "The Dark Knight Rises".
On July 22 in Norwalk, California, a man at a "The Dark Knight Rises" screening who yelled, "Does anyone have a gun?"
and "I should go off like in Colorado" was arrested for making criminal threats.
On July 22 in Pittsburgh, Pennsylvania, a man faced criminal charges for being involved in a fight in a cinema restroom.
During the fight, a moviegoer shouted "Gun!
", causing panic inside the theater showing "The Dark Knight Rises".
On July 23 in San Jose, California, someone threw a package into a theater showing "The Dark Knight Rises" and reportedly yelled that it was a bomb, leading to an evacuation.
On July 23 in Sierra Vista, Arizona, a moviegoer's confrontation with an intoxicated man with a backpack at a "The Dark Knight Rises" screening led to "mass hysteria" and 50 people evacuating the theater.
On August 4 in Westlake, Ohio, a man was arrested for carrying several weapons in a satchel into a screening of "The Dark Knight Rises".
The suspect later received six months imprisonment over the incident.  
On July 20, 2012, a mass shooting occurred inside of a Century movie theater in Aurora, Colorado, during a midnight screening of the film "The Dark Knight Rises".
A gunman, dressed in tactical clothing, set off tear gas grenades and shot into the audience with multiple firearms, killing 12 people and injuring 70 others.
The sole suspect, James Eagan Holmes, was arrested outside the cinema minutes later. 
On July 20, 2012, during a midnight showing of the film at the Century 16 cinema in Aurora, Colorado, a gunman wearing a gas mask opened fire inside the theater, killing 12 people and injuring 58 others.
Police responding to the shooting apprehended a suspect, later identified as 24-year-old James Eagan Holmes, shortly after arriving on the scene.
At the time of his arrest, Holmes allegedly identified himself as the Joker to police.
Warner Bros. stated that it was deeply saddened by the shooting, and announced the cancellation of the Paris, Mexico, and Japan premieres of "The Dark Knight Rises", and suspended the marketing campaign for the film in Finland.
Several broadcast networks also suspended television ads for the film in the United States because of the tragedy.
The trailer for "Gangster Squad", another Warner Bros. movie which was included in the screening of "The Dark Knight Rises", has been removed as it contains a scene which shows gangsters shooting submachine guns at moviegoers through the screen, similar to the shooting in Aurora.
Director Christopher Nolan released a public statement calling the shooting "unbearably savage".
Other stars of the film released statements expressing their condolences, with star Christian Bale paying a personal visit to the survivors and the memorial in Aurora.
During the 2012 Aurora shooting on July 20, 2012, the gunman released tear gas before opening fire during a showing of "The Dark Knight Rises", causing many of the moviegoers to mistake the attack for part of the film's special effects.
According to preliminary reports, the suspect initially went into the theater as a patron.
He then exited and propped open an emergency exit, while he went to his car to get his bulletproof vest and weapons.
He then attacked after reentry through the propped-open door.
In this type of situation, there could have been considerable warning.
Technology exists that can warn about open doors (such as an emergency door that shouldn't normally be open), and can send clear warning and instructions to any number of devices, including a movie screen.
There is also a significant opportunity to consider the use of the theater's fire alarm system.
Shortly after the assailant began shooting, the building's fire alarms were sounded.
The natural inclination, in response to a fire alarm, would be to evacuate the building, but in this case, the assailant was specifically targeting people who attempted to exit.