Dallas Cowboys pass rusher Sam Williams has found himself in trouble with the law yet again ... the 24-year-old was arrested in Texas over the weekend -- the second time cops have accused him of wrongdoing in the last year.
According to a Frisco Police Dept. spokesperson, Williams was taken into custody on Sunday ... and booked on charges of possession of a controlled substance and unlawful carrying of a weapon.
Further details surrounding the arrest were not made immediately available.
The 24-year-old had just played in the Cowboys' preseason game on Saturday night against the Seahawks in Seattle .