Four Oklahoma football players have been suspended indefinitely for violating team rules, the athletic department announced late Wednesday night.

OU coach Bob Stoops said defensive back Quentin Hayes and wide receivers Trey Franks, Kameel Jackson and Jaz Reynolds were suspended. He did not say why.

Reynolds was OU’s third-leading receiver last season, with 41 receptions, 715 yards and five touchdowns.

Hayes played in eight games on special teams and had tackles against Missouri, Texas and Kansas. Franks led the team in kick returns, averaging 23.9 yards a return on 22 attempts.

Jackson had career-highs in receptions with three and 45 yards receiving against Iowa in the Insight Bowl.

Both Franks and Reynolds have been suspended before.

Reynolds was suspended after tweeting insensitive comments about a gunman at U. Texas. He was also suspended for one game last season for a violation of team rules.

Franks was suspended for two games last season for violating team rules.