The Maricopa County, Arizona grand jury decision was made on Monday and released on Thursday.
Pittman, 27, was arrested in Phoenix, Arizona on May 31 and charged with three counts each of aggravated assault and reckless endangerment after he allegedly rammed his Hummer into a Mercedes driven by his wife, Melissa. The couple's two-year-old son, Mycah, and his 18-year-old babysitter, were also passengers inside Melissa's vehicle.
While no one was hurt in the crash, Mrs. Pittman's vehicle sustained significant damage as a result of the crash.
Pittman was formally charged with two of the six original charges on June 4. According to ESPN, Pittman will be arraigned on June 19, but the fifth-year running back could find himself in jail before the arraignment takes place.
Pittman is already on probation for two domestic violence incidents against his wife that occurred in the summer of 2001, and his latest brush with the law could land him in jail before his case is actually heard before a court.
If convicted, Pittman will receive a minimum of five years in prison and a maximum of 15 for each count against him.
Even if Pittman isn't convicted of the charges, the National Football, who suspended Pittman one game in 2001 as a result of the two domestic violence incidents, could face an even harsher punishment.
The Bucs organization has said it will wait for Pittman's case to run its course through the courts before determining what type of punishment, if any, is appropriate.
Pittman has been participating in voluntary workouts for the last two weeks at One Buccaneer Place.