WATCH: Portland Police releases footage of deadly force incident involving a white suspect who was shot attempting to stab a black police officer

The rumor that a black man had been "murdered" by a Portland police officer prompted Antifa and its supporters to take to the streets.

As documented on social media by The Post Millennial editor-at-large Andy Ngo, an Antifa mob mobilized to the scene of the crime by falsely claiming that a person of colored was murdered by a police officer. Surveillance video footage of the incident shows a white male charging at a black police officer with some form of sharp implement before he is shot.

The Portland Police Bureau detailed the incident in a statement released late Friday evening:

Last night, a Portland Police Officer was involved in a fatal shooting. Understandably, there is a lot of emotion following a use of deadly force and community members want to know what occurred immediately. While we are committed to getting as much information out as quickly as possible, we have to weigh how this affects the investigation and accountability process.

Unfortunately, shortly after last night’s shooting, people began sharing false information on social media. That seemed to fuel a hostile crowd that gathered at the scene of the investigation and it made an already tense situation even more precarious for community members, officers and investigators. Some in the crowd even tried to push into the closed area. If bystanders were able to enter the scene, they would have ultimately destroyed or contaminated evidence, impacting the criminal and administrative investigations.

The Police Bureau has a strict directive that outlines what has to occur following a deadly force incident, and last night our personnel were doing their best to follow it. As they were working, officers were assaulted, sprayed with an unknown substance, and their vehicles were damaged. This did nothing to further the goal of a thorough investigation or accountability process. I commend the officers for containing the scene so investigators could do their work.

The police noted that due to the size of the mob, Portland police had to ask for assistance to take 911 calls and received support from the Multnomah County Sheriff’s Office and the Lake Oswego Police Department.