Image copyright Reuters Image caption Corporal Heath Gummitt was one of the first law enforcement officers to respond
At least five people have been injured in a shooting at a movie theatre in Colorado.
Witnesses say two men opened fire with handguns in the auditorium in Aurora, which is about 16 miles (26km) north of Denver.
Police say no suspects have been detained and an investigation is under way.
They have received multiple calls about the incident. No fatalities have been reported.
The shooting happened in the theatre at around 19:30 local time (20:30 GMT).
Alberto Ginart, the president of United Artists, which owns the theatre, said he was horrified by the incident, which he described as an “isolated, crazed individual”.
Image copyright Reuters Image caption Alamo Drafthouse head honcho Tim League said he was “shocked and saddened” by the shooting
“This is a tragedy for our city and a reminder that nothing is ever immune from the violence that plagues our world,” he said.
The chief of police in Aurora, Gary Bird, said police were searching for two men, but that they had not located them yet.
“Currently, we have one victim from the parking lot, one at the front of the theater and two in the auditorium, all five victims of gunshot wounds,” he said.
The two gunmen were identified as one adult male and one adult female, but there have been no arrests.
There was no explanation for why the people were at the cinema. There was no information available about them.
Around 20,000 people are estimated to have been inside the cinema at the time of the shooting.
The attack is the latest in a series of incidents at movie theatres across the country.
In the latest one, a gunman killed two people and wounded nine when he opened fire at an outdoor screening of the new Batman movie.