The IUPD Daily Crime and Fire Log recorded an allegation of hazing at the Sigma Nu chapter on September 20, 2026, describing a substantial risk of bodily injury, per the Indiana Daily Student. IU placed the chapter on cease-and-desist status on September 29, 2026, and the case was referred to university officials for review; the investigation was ongoing at the time of the cited reports. The reports do not describe specific alleged acts or identify a victim, report no criminal charges or arrests, and name no individual member. Cease-and-desist is a university administrative action, not a criminal proceeding. IDS and WFIU counted Sigma Nu as the fifth IU fraternity placed on cease-and-desist in September 2026, alongside Beta Theta Pi, Pi Kappa Phi, Theta Chi, and Delta Tau Delta.