Friends and family are grieving the loss Mark Fleischman.

Fleischman, who operated the celebrity favorite Studio 54 nightclub in the early ‘80s, died by assisted suicide on July 13. He was 82.

Fleischman’s close friend and former business partner Daniel Fitzgerald shared the news on social media. “For almost 20 years, Mark Fleischman was my partner at the legendary Century Club,” he wrote in a Facebook post on July 12, adding that Fleischman, who became ill in 2016, traveled to Switzerland to end his life on July 13.

He said that Mark made the decision not to suffer the pain anymore and sought assisted suicide in Switzerland. On the Fourth of July, I hosted a farewell celebration for Mark. It was a wonderful time that we shared and will be cherished forever. Rest In Peace, my dear friend.”

Last month, Fleischman told The New York Post that he had made plans to die by suicide with the help of Swiss nonprofit group Dignitas by consuming a lethal dose of barbiturates.