Was there a gun involved?

Apparently yes

NBC News

Border Patrol agent shoots and kills man in Minnesota, officials say

The shooting, captured on a video posted to Facebook and verified by NBC News, was followed by a heated confrontation between officers and proteste...

Here we see one of the ICE agents approach the victim (in the agent dogpile) with empty hands. After being hunched over the victim and apparently grasping around his waist area, pulling up his shirt (or perhaps coincidence) and then ballerina'ing away with a firearm at the same time shots begin to ring out. The sight on the firearm appears to match the recovered firearm allegedly belonging to the victim. Stay tuned 🪄✨