At least 10 people, including a police officer, have been killed in a shooting in Boulder, Colorado.
An armed assailant opened fire on a local supermarket.
People said they had to flee to escape the shooting.
In the scene taken from above, a man with blood on his legs is seen being handcuffed by the police.
Speaking at a press conference, Boulder Police Chief Maris Harold said a suspect had been taken into custody and was being treated at a hospital.
The incident took place at around 2.30 pm local time.
The suspects entered a shopping center called King Supers and opened fire.
Eyewitnesses had streamed the incident live on social media.
Last month, President Joe Biden said he would recommend legislation to scrutinize the backgrounds of those seeking to buy weapons.