IOWA CITY, Iowa (AP) — The University of Iowa has banned four fraternity chapters after a two-month investigation spurred by a number of alcohol-related incidents. School officials announced Thursday that Delta Chi, Sigma Nu, Sigma Alpha Epsilon and the UI chapter of Kappa Sigma International Fraternity can no longer operate as student organizations at the university. The Kappa Sigma chapter, known as Beta-Rho, was also removed from its national organization after hazing allegations.

The university began cracking down on Greek life after a student died at an out-of-state fraternity event in 2017 . Fraternities have since been banned from having events with alcohol. Students and faculty have been working on a strategic plan on how to improve “risk management, health and safety” at fraternities and sororities. The plan will be announced next spring.