By Kate Ward
July 29, 2010 at 04:27 PM EDT

People reports Chris Klein has opted to extend his 30-day rehab stay. The actor, who had checked into the Cirque Lodge shortly after a June 16 DUI arrest, has not indicated how much longer he plans to stay in the treatment facility. “Chris, along with his support team, has decided to extend his treatment,” his rep told People. “He is doing fantastic and is optimistic about his future. He thanks everyone for their continued support.”