The U.S. Secretary of Defense has confirmed the death of the son of U.S. Sen. Jim Inhofe of Oklahoma in the weekend crash of a plane that was en route from Salina, Kan., to Tulsa, Okla.

Pentagon spokesman Col. Steve Warren says that Defense Secretary Chuck Hagel “was informed of Sen. Inhofe’s son’s death.”

Perry Inhofe was a 52-year-old orthopedic surgeon for Central States Orthopedics in Tulsa. According to the clinic’s website, he graduated from Duke University in 1984 before attending medical school at Washington University in St. Louis.

The Federal Aviation Administration says the multiengine plane was about 5 miles north of Tulsa International Airport when it crashed shortly before 4 p.m. Sunday. The plane took off from Salina, Kan.

The married father lived in Tulsa.