The Red Raiders didn't provide any further specifics Sunday night and Beal said Leach would have no further comment.
According to the paper, on Sunday Carter told followers of his Twitter account that he'd been suspended and stripped of his captaincy.
"I am not a captain anymore and will not be playing this week. Good luck, Red Raiders; I'll still be cheering on my family from the stands," Carter tweeted. "This is not how I saw our season ... I just cried like an idiot. I want us to be so good my last year, and I feel like I'm letting everyone down."
The Red Raiders lost to No. 17 Houston 29-28 on Saturday night.