Minnesota ICE official urges protests to remain peaceful amid tensions 'like nothing I've ever seen before'

"When we're out there, we have no problem with the public watching what we do, filming what we do, talking to us while we do it, but there is that line, though, when they start to impede and get in situations where, frankly, we don't want them to be, we can't have them to be, kind of in our workspace," he told "Fox & Friends Weekend." 

"That's when we have issues," he added. 

Pretti's parents reacted to the news Saturday, saying they are "heartbroken but also very angry," and condemned the version of events presented by law enforcement as "sickening lies."

Olson called the incident "unfortunate" during his Fox News appearance.

"No officer wakes up in the morning and hopes to have to use any type of force, let alone deadly force, and now this happened," he said.

"Again, this happened because of kind of what we're seeing around here with a lot of these agitators, these vigilantes kind of surrounding the officers on the street."