An inmate at Airway Heights Corrections Center was found dead early this morning. George Tate, 63, was found unresponsive in his cell about 1 a.m., then pronounced dead at 1:25 a.m., according to the prison. Tate, who was serving a sentence for a sex crime against a child, was scheduled to be released in March 2010, according to the prison. Tate was first admitted to prison in 1967 on a carnal knowledge charge, according to the Washington Department of Corrections. The charge carried a minimum 20-year sentence, and he went back to prison in November 1980 after being convicted of first-degree rape, prison records show. That charge carried a 30-year sentence. His cause of death is not yet known, prison spokeswoman Risa Klemme said. “It’s an unexpected death,” Klemme said.