Ryen Monroe, 25, of 1511 Idaho St., was arrested and charged with operating while intoxicated on the 3400 block of Lincoln Way. He was transported to the Story County Justice Center (reported at 1:21 a.m.).

Officers initiated a drug related investigation at the Armory (reported at 5:57 p.m.).

Ryan Derichs, 19, 5316 Wallace Hall, was arrested and charged with possession of a controlled substance and possession of drug paraphernalia at Wallace Hall. He was subsequently released on citation (reported at 10:36 p.m.).