The mystery behind the death of Las Vegas entertainer Danny Gans in May has been solved.

The Clark Country Coroners office has revealed that Gans died from accidental acute hydromorphone toxicity. The report states that Gans developed a toxic level of hydromorphone in his system, causing his respiration to become depressed. Gans was taking hydromorphone to treat chronic pain. A cardiovascular condition is also believed to have contributed to his death.

Hydromorphone is an opiate based medication sold under numerous names, including Hydal, Sophidone and Hydrostat. While the drug does come with a range of possible side effects, overdoses are rarely observed in long term users, but when they do occur they may lead to circulatory system collapse. Hydromorphone users are also advised to avoid drinking alcohol as the alcohol can increase the toxicity of the drug.