The overdose death of a Kaweah Health employee who stole drugs from the hospital for personal use led to a federal investigation that found the medical facility was deficient in managing its supply of narcotics, CEO Gary Herbst announced Friday. During its investigation into the employee's death, the hospital found a physician contracted with Kaweah Health also stole medication for personal use in a separate, unrelated incident, Herbst said. "We still greatly mourn his death and miss him terribly," Herbst said. No patients were harmed as a result of the stolen drugs, according to the hospital's own investigation, Herbst said.