(AMES, Iowa/KCCI) — One of the three Iowa State University students involved in a harassment case has been cleared. Tyler Ekstrom was charged with assault and extortion. He originally pleaded not guilty. Police say he and two other Farmhouse Fraternity members tried to force another member to perform a sex act and threatened to shoot that person with an airsoft gun if he didn’t do it. On Friday, a judge granted a motion to dismiss the charges against Ekstrom. Another member, Grant Kuehnast, was sentenced earlier in the week to two years probation and an $855 fine.