Sources close to the UFC superstar tell us he's taking his legal matters VERY seriously -- but isn't brushing off his fight with D.C. He's planning on jumping right back into his training regimen as soon as he gets out of jail.
In fact, Jones tweeted about the fight late Monday night ... saying, "Today I had some of the best workouts I've had all camp. I've trained too hard and come too far to let anything get to me at this point."
The UFC says it's still gathering information -- but so far, it appears the fight is set to go forward as planned.