Dolores O'Riordan, the lead singer of the Irish band The Cranberries, died suddenly in London on Monday, her publicist said. She was 46. O'Riordan was in London for a quick recording session, the publicist said, but did not immediately provide any other details, adding only that "family members are devastated to hear the breaking news and have requested privacy at this very difficult time." O'Riordan had bipolar disorder, BBC News reports, as well as ongoing back issues that forced the band to cancel a recent European tour. The Cranberries sold more than 40 million records worldwide. They are best known for their '90s hits, including "Zombie" and "Linger." Jessica Hullinger