Artificers will try again Saturday to penetrate inside the apartment's lone gunman arrested after opening fire in a crowded theater in Aurora , a suburb of Denver (USA), killing 12 people and wounded 58 at a first of the new Batman.
Bomb experts had tried Friday until nightfall to enter the apartment of the alleged gunman, found trapped with an arsenal of products chemicals and flammable Friday.
"There is a mass of electric son, son of relaxation, jars filled with ammunition, liquid. Several things that look like mortar ammunition. Entering the apartment safely is a challenge, "said Chief of Police Dan Oates of Aurora during a press conference, adding that operations would resume Saturday.
Inside, police hope to gather clues to help them understand the motive for the alleged gunman, a common inhabitant of the age of 24, James Holmes who was arrested without resistance.
Friday night, residents of Aurora gathered for two evenings, including one at midnight. Hundreds of mourners held candles and expressed their grief, in memory of the dead and wounded.
"Many patients are in critical condition," continued the chief of police. Nearly all the wounded were hit by gunfire, he said, adding that a "handful" of people treated in hospital showed no injury ball, but had suffered other injuries during the panic caused by the firing.
The police gave no indication of the identity of victims, but the Batman series, whose last component is not recommended at least 13 years, attracts an audience made up mostly of teenagers and young adults.
A children's hospital in the region has reported six young victims, the youngest of whom was only six years old. According to the Pentagon, at least three of the injured belong to the U.S. Army.
James Holmes, the alleged gunman is a student from San Diego, California, which was previously not known to police, except for a speeding ticket last October.
He had however bought more than 6,000 cartridges on the internet these last two months, according to the police chief. His services have seized an assault rifle, a shotgun and a pistol in his car, while another gun was found in the cinema.
The weapons were acquired legally, according to the store that sold them, Bass Pro Shops.
The attack caused panic among the hundreds of spectators for the first session at midnight "The Dark Knight rises", last Batman trilogy whose output was expected by millions of fans.
According to Dan Oates, witnesses said the gunman, dressed in protective gear and gas mask, had dropped a tear gas bomb or smoke to ; his arrival in the room of the multiplex "Century 16 Movie Theater": "They heard a whistle, then a kind of gas occurred and the gunman opened fire."
The shooting sparked anxious reactions from several political leaders, particularly President Barack Obama, and has reignited the debate on the Control of Firearms in the U.S. States.
The U.S. president, campaigning in Florida since Thursday (southeast), has suspended its tour to return to Washington. His Republican rival Mitt Romney suspended his campaign also.
The White House said that there was a priori "no connection with terrorism". Obama, however, denounced violence "senseless" and called on his countrymen to "a day of prayer and reflection". He ordered flags to half-mast on all public buildings for six days.
French President Francois Hollande expressed "very strong feelings" and condolences to Americans. In Paris, the premiere of the film, to be held in the presence of players Friday night on the Champs-Elysées, has been canceled.
The NYPD announced that it would strengthen security measures in cinemas broadcasting Batman "as a precaution against possible imitators and to improve feelings of safety ; spectators ".