A gunman opened fire inside a grocery store in Boulder, Colorado, on Monday afternoon, killing 10 people, including a police officer, authorities in Boulder said.

Police said that they had taken a suspect into custody after the shooting. That person was injured, authorities said. Videos showed a handcuffed man being escorted from the building by officers, shirtless and with his right leg appearing to be covered in blood.

People inside the grocery, King Soopers, described a harrowing and chaotic scene inside the store.

“I thought I was going to die,” said Alex Arellano, 35, who was working in the meat department at King Soopers, in the South Boulder area, when he heard a series of gunshots, then saw people running toward an exit near his department.

For a while, Arellano said he and two other men hid in the department. He said that he could hear the gunfire, but could see no one.

“The shots are getting closer,” he recalled in an interview. “I’m thinking of my parents, and I was freaking out.” Arellano said that he and the men he was hiding with eventually escaped through an exit in the back of the building.

Authorities identified the police officer who died in the shooting as Eric Talley, who had served with the Boulder department since 2010 and was the first to arrive at the scene.

The shooting in Colorado comes only six days after another deadly mass shooting in the Atlanta area, which left eight people dead. Until those killings Tuesday, it had been a year since there had been a large-scale shooting in a public place.

Gov. Jared Polis and other officials issued statements of sympathy and sadness.

“My prayers are with our fellow Coloradans in this time of sadness and grief as we learn more about the extent of the tragedy,” Polis said.

By Monday evening, President Joe Biden had been briefed on the shooting in Boulder and Jen Psaki, the White House press secretary, said on Twitter that he would be kept apprised of further developments.

Colorado has been the scene of a number of fatal mass shootings in recent years, including one at a crowded movie theater in Aurora during a midnight screening of a Batman film in 2012 that left 12 dead. At Columbine High School in Littleton in 1999, a teacher and 12 students were killed.

(New York Times News Service)