Stephen Gately died of natural causes due to a pulmonary oedema, which is a build-up of fluid in the lungs causing respiratory failure. This was linked to an undiagnosed congenital heart defect. His death occurred in his flat in Mallorca, Spain, in 2009, and police ruled out drug or alcohol abuse as causes of death. There were no signs of violence or suicide, and it was determined to be a tragic accident related to his heart condition.