Chile's Communist Party wants a formal investigation into the death of the country's revered poet Pablo Neruda, who officially died of cancer only days after the 1973 coup toppled his close friend, President Salvador Allende. Several witnesses have raised doubts about his death recently, including Neruda's driver, who says he was poisoned by government agents. Neruda died at the age of 69 on Sept. 23, 1973, 12 days after the coup. He had just published a withering criticism of Gen. Augusto Pinochet's dictatorship that eulogized Allende and accused Chile's soldiers of having betrayed their country. He'd won the Nobel Prize for Literature two years earlier, giving him great international prestige. Neruda died, officially of prostate cancer, in the same clinic where former President Eduardo Frei was allegedly poisoned in 1981 by six people, including several Pinochet agents, who were charged last year in connection with his death. Now Neruda's driver, Manuel Araya, has alleged that Pinochet agents injected deadly poison into Neruda's stomach. [There are] similar doubts about the deaths of Allende, Frei and Allende's defense minister Jose Toha, who was found hanged in a closet while in military custody.