Washington State head coach Mike Leach says the Sun Devils' methods on the sidelines should be investigated.

Ahead of Saturday's game against the Arizona State, Washington State head coach Mike Leach called for an investigation into Sun Devils’ sideline methods after two teams accused them of stealing signs in two consecutive games, according to The Spokesman-Review.

“I mean, you've got two straight schools with concerns over it, back-to-back, and they have a reputation for it that extends beyond that,'” Leach said. “The conference probably ought to investigate them and see what they’re doing, make sure nothing is illegal.”

Utah ​head coach Kyle Whittingham believes he saw an Arizona State head coach make a throwing motion on the sidelines just before the Utes attempted a pass during their 34–18 defeat of Arizona State on Oct. 18. The Utes adjusted their communication methods in the fourth quarter by going to a huddle after believing the Sun Devils had been stealing their signs.

• Inside Read: High stakes of stealing signals

Oregon also came away with a victory in their contest with Arizona State on Thursday, but took precautionary measures by installing curtains on the sideline to block their play-calling from being seen from the opposite sideline.

“From the intel we got, I’ve never heard of a team going to the lengths they go to to try to get the signals,” Oregon offensive coordinator Scott Frost told reporters on Monday.

Washington State (5–3) looks to rebound from a loss to Stanford last week as the Cougars host Arizona State (4–4) on Saturday.

- Christopher Chavez