Reports are that Pachall ran a stop sign and hit a curb while driving his vehicle around 1 a.m. Thursday morning near the TCU campus.
TCU head coach Gary Patterson released a statement confirming his starting quarterback's suspension.
"Casey Pachall has been suspended indefinitely from competition. My job as a head coach is to win games, educate our kids and help them with their lives," said Patterson said in a statement released by the school. TCU had no further comment regarding the arrest.
Pachall had started 17 consecutive games for the Horned Frogs, going 15-2 in that span. In 2012, he was 64-of-97 for 948 yards with 10 scores and just one interception. TCU will now rely on redshirt freshman Trevone Boykin to take over the reins. The 6-foot-2, 215-pounder has added a spark to TCU's offense this season rushing for 122 yards and 1 score to go along with 74 yards through the air with 1 touchdown.
The #13 ranked Horned Frogs host 3-1 Iowa State this Saturday at 2:30 as Boykin will face one of the top defenses in the Big 12.