A member of the late Chilean dictator Augusto Pinochet's brutal secret police who's been accused of murder taught for more than a decade at the Pentagon's premier university, despite repeated complaints by his colleagues about his past. Jaime Garcia Covarrubias is charged in criminal court in Santiago with being the mastermind in the execution-style slayings of seven people in 1973, according to court documents. An accuser ... identified Garcia Covarrubias as the person who sexually tortured him. Despite knowing of the allegations, State and Defense department officials allowed Garcia Covarrubias to retain his visa and continue working at a school affiliated with the National Defense University until last year. Human rights groups also question the school's selection of a second professor, Colombia's former top military commander. Some Latin America experts said the hirings by the William J. Perry Center for Hemispheric Defense Studies reflected a continuing inclination by the U.S government to overlook human rights violations in Latin America, especially in countries where it funded efforts to quash leftists. Those experts were especially troubled by Garcia Covarrubias' long tenure at one of the nation's most renowned defense institutions. His case is one of 108 involving tortured, disappeared or murdered supporters of the deposed elected president, Salvador Allende. More than 3,000 people died at the hands of the regime. Despite very graphic torture accusations against Garcia Covarrubias, U.S. officials are rallying behind him.