Canadian actress and civil rights activist Shirley Douglas died Sunday at the age of 86, her son actor Kiefer Sutherland said. Douglas died following a bout of pneumonia, Sutherland wrote on Twitter, specifying that it was not related to the novel coronavirus pandemic.

"My mother was an extraordinary woman who led an extraordinary life," wrote Sutherland, best known as agent Jack Bauer in the TV thriller "24." "Sadly she had been battling for her health for quite some time and we, as a family, knew this day was coming," he wrote. Douglas spent her acting career between Canada and Hollywood, where she worked with big-name directors such as Stanley Kubrick and David Cronenberg.