A heavily armed gunman killed at least 12 people and wounded 50 more during an early Friday morning screening of the new Batman movie at an Aurora, Colorado, theater, police Chief Dan Oates told reporters.
Earlier, police said 14 had been killed.
Police arrested a man believed to be the shooter in a rear parking lot of the theater, Frank Fania, a police spokesman, told CNN. The suspect was not immediately identified, though Fania said he was believed to be in his early 20s.
"He did not resist. He did not put up a fight," Fania said. Police seized a rifle and a handgun from the suspect, and another gun was found in the theater, he said.
Denver Post has this raw footage:
More details to come.