A brave bystander who witnessed the shootings in Dallas has posted footage online, appearing to show a police officer who has been shot.
WARNING: This video contains some strong language and scenes that may be distressing.
The video, posted on Facebook by Michael Kevin Bautista, shows Dallas SWAT team officers in position as numerous gunshots are heard. They appear to be moving in on a suspect, and then someone can be seen injured on the floor.
According to the cameraman, it looks like the person is a police officer who has been shot.
During the shooting, which broke out after a protest against police violence on Thursday, five police officers were killed and more were wounded.
In the footage, Bautista can be heard assuring other bystanders he is in a safe position while filming.
The shocking video has been seen by viewers around the world. Stacey Schultz commented: "Great job. God continue to protect you man. Stay safe from Scotland."