SOUTH LAKE TAHOE, Calif. (AP) – California Gov. Arnold Schwarzenegger pulled out of an environmental summit Saturday to have one knee examined for a possibly torn meniscus.

He had been scheduled to be co-host of the session on climate change at South Lake Tahoe, but Sen. Dianne Feinstein told the crowd that the governor told her he was on his way to a Los Angeles hospital.

Schwarzenegger spokesman Matt David said the governor injured the knee recently while exercising and it had been bothering him all week.

The summit was being attended by officials of the California, Nevada and federal governments.

Schwarzenegger is expected to return to work Monday.

The former bodybuilder-actor-turned politician, who turned 61 last month, has suffered numerous injuries over the years, most recently shattering a femur during a skiing accident in 2006. He broke several ribs in a 2001 motorcycle crash and needed 15 stitches following another motorcycle crash in 2006. The seven-time Mr. Olympia also has had a hip and a heart valve replaced and had rotator cuff surgery in 2003.

AP-ES-08-16-08 1457EDT