What is david bale cause of death?

David Bale, the father of actor Christian Bale, died of brain lymphoma on December 30, 2003, at the age of 62. He had been diagnosed with the disease earlier that year and had been undergoing treatment. Bale was a writer, environmentalist, and activist, who had worked for the United Nations and other organizations. He was also the author of several books, including "The Last Frontier," a novel about eco-terrorism.