The lead singer of Irish rock group The Cranberries, Dolores O'Riordan, has died in London, according to her publicist. She was 46 years old. O'Riordan had been in London for a short recording session. The Irish group shot to fame in the 1990s with hits like "Linger" and "Zombie", and was one of the most successful rock groups of that decade, selling over 40 million records. The singer's publicist declined to comment on the possible cause of death.