It all went down Wednesday morning at Jackson's home in Tarzana, CA -- with law enforcement sources telling us 4 to 5 people stormed the home with guns.
We're told the Washington Redskins star was NOT home at the time -- but there were roughly 6 people inside who FOUGHT the intruders.
Law enforcement sources tell us at least one person in the home was pistol-whipped and suffered minor injuries.
Eventually, the people inside the home fought off the intruders who fled from the scene.
Cops arrived a short time later and took a report.
We're told investigators believe the intruders had been in the home before. Sources connected to the incident tell us the intruders appeared to know exactly where the security cameras were placed.
Our law enforcement sources tell us cops have leads on some of the suspects -- and believe the incident was gang related.
As for Jackson, he has DENIED being part of a gang in the past -- but says some of his friends are in gangs.
The Eagles unceremoniously released Jackson during the 2014 offseason just hours after a report emerged about the receiver's troubling gang connections.
This isn't the first time Jackson has dealt with a house invasion, either. Jackson's South Philadelphia home was robbed in 2014.