A Marine reservist was found guilty Thursday of dereliction of duty and the abuse of prisoners last year at a makeshift detention camp in Iraq, but cleared of assaulting a 52-year-old Iraqi man who later died there. The military jury's verdict was read following four hours of deliberation. Pittman, 40, a federal prison guard in New York in his civilian life, was acquitted of the most serious charge, of karate-kicking 52-year-old Nagem Hatab in the chest shortly before the Iraqi was found dead in a dusty yard at the facility known as Camp Whitehorse. An autopsy found Hatab had six broken ribs, as well as several deep bruises, and apparently died from suffocation caused by a broken bone in his throat. The jury was to begin sentencing deliberations on Friday. Pittman could receive up nine months in a military prison and a bad-conduct discharge.