Dolores O’Riordan, the lead singer of the ’90s alt-rock band the Cranberries, has pleaded guilty to assaulting Irish policemen during an altercation with a flight attendant back in November of 2014. O’Riordan claims to have been suffering a psychotic episode at the time. ABC News reports that O’Riordan’s potential penalties could be range from a cash fine to six months’ jail time.