According to the police report, obtained by TMZ Sports, Prescott was pulled over at 12:31 AM in his 2016 Cadillac Escalade SUV -- and later charged with speeding and DUI.
Interesting note in the police report ... cops say Prescott took 2 breath tests -- but one was an "insufficient sample" and the other one was an "invalid sample."
This could be a very good thing for Prescott -- because the absence of a blood alcohol sample makes it harder for prosecutors to get a DUI conviction.
Prescott was one of the top QBs in the upcoming draft and before the arrest had been projected to go in the 3rd or 4th round.