Cops On Hunt For Gunman At MMA Fight, New Video Shows Chaos After Shots Fired

TMZ Sports has obtained new footage showing the desperate scramble to neutralize the gunman who fired shots into the air at an MMA event in Florida ... and it's scary stuff.

You can see in the video, people at the Bamboo Room on March 20 were scared and confused after an unidentified man in a red shirt pulled out a handgun and fired into the air in what appears to be an attempt to restore order when a massive brawl broke out in the crowd.

The video -- captured by Florida City Entertainment -- shows multiple people tried to confront the gunman ... but nobody wanted to get too close because the guy was waving around a loaded weapon like it was a loaf of bread.

Eventually, multiple armed security personnel drew their own weapons and confronted the man in a corridor near an exit.

But, before additional law enforcement officers could respond to the scene ... the man was kicked out of the venue and hasn't been heard from since.

The Palm Beach County Sheriff's Office tells TMZ Sports it's still actively investigating the incident ... and released photos of the gunman in the hopes someone will step forward and identify him.

As we previously reported, multiple people were injured in a massive brawl that broke out at the RIZE Fighting Championship event in a chaotic scene that included people throwing punches and chairs.