An unidentified gunman opened fire during a Madden NFL 19 livestream tournament in Jacksonville, Florida, killing several attendees.

The Jacksonville Sheriff's Office reports the suspected gunman killed three people and wounded several others. According to local news outlet News4Jax, there are at least nine people injured. Gamers were taking part in the tournament held at the Jacksonville Landing complex before shots rang out.

Multiple fatalities at the scene, many transported. #TheLandingMassShooting
https://t.co/qBJvkaO7xT

— Jax Sheriff's Office (@JSOPIO) August 26, 2018

One of the most shared videos of the event showed a black gamer being targeted by the gunman. A laser dot appeared on his sweatshirt before the video cut off.

Disturbing video/audio is being posted on social media following a "mass shooting" in Jacksonville.
**WARNING: This video/audio may be disturbing for some viewers** #TheLandingMassShooting
pic.twitter.com/JKcQFUi3sU

— CBS 4 News (@kgbt) August 26, 2018

Notice just prior to the #shooting at the #Madden19 tournament what looks like a red laser go across this gentleman’s chest. #TheLandingMassShooting
#jacksonville
#activeshooter
pic.twitter.com/1xvMIIyatd

— C-T Watch, Inc. (@CTWatchInc) August 26, 2018

Sources told News4Jax the gunman turned the gun on himself after targeting and firing upon attendees. Authorities are not sure if he acted alone.

Los Angeles Times reporter Matt Pearce tweeted the gunman was a gamer who lost at the competition. At this point, there is little known about the shooter's motives.

Electronic Arts, the company that produces Madden NFL 19, tweeted the following statement: "We are aware of an incident at a sanctioned Madden Championship Series competition in Jacksonville. We are working with authorities to gather facts at this stage."

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