The MU campus experienced a widespread power outage Tuesday afternoon, Public Information Officer Sara Diedrich confirmed.
About 20 buildings lost power around 4:30 p.m., including the MU Student Center, Ellis Library and various residence halls.
Power was restored to Ellis Library around 5:45 p.m, and most affected buildings once again had power by 6 p.m. Gillett, Hudson and Rollins halls were the last to regain power, around 9 p.m.
The outage was caused by a complication at the Conley Avenue substation, Diedrich said in an email.
The outage in the residence halls caused some students to become trapped in elevators. MU police officers and the Columbia Fire Department responded to those calls, and there were no reported injuries.