updated 07/29/2010 AT 6:00 AM ET
•originally published 07/29/2010 AT 9:00 AM ET
“Chris, along with his support team, has decided to extend his treatment. He is doing fantastic and is optimistic about his future. He thanks everyone for their continued support,” his rep Jaime Primak tells PEOPLE.
While the duration of Klein’s treatment is unknown, he will remain at the Cirque Lodge in Utah, where he has been since June 21.