notably including the difficult situation in the Free Territory of Trieste. Few months before, former Prime Minister Pella risked an open conflict with Josip Tito's Yugoslavia, Scelba, instead, pursued a diplomatic way, which brought to the sign of the so-called "London Memorandum", on 5 October 1954. The deal gave the former "Zone A" with Trieste to Italy for ordinary civil administration, and "Zone B", which had already had a communist government since 1947, to Yugoslavia. While appointed Prime Minister, the aftermath of the Portella della Ginestra massacre came to haunt Scelba again. On 9 February 1954, Gaspare Pisciotta was found dead in his cell. After Pisciotta had been sentenced to life in imprisonment and forced labour, he realized that he had been abandoned by all. He declared that he was going to tell the whole truth, in particular who signed the letter which had been brought to Giuliano, which demanded the massacre at Portella delle Ginestra in exchange for liberty for the bandits and which Giuliano had destroyed immediately. The cause of Pisciotta's death, as revealed by the autopsy, was the ingestion of 20 mg of strychnine. Both the government and the Mafia were suggested as being behind the murder of Pisciotta, but no one was ever brought to trial. Fascist and communist press did their best to put it on newly appointed Scelba's administration, but they had no evidence to go on. Another scandal that hurled Scelba's government was the Montesi affair. Foreign Minister Attilio Piccioni, a co-founder of DC, as well as the national police chief, had to resign when Piccioni's jazz-pianist son was implicated in the scandal involving sex, narcotics and the death of party girl Wilma Montesi. In social policy, in August 1954 the government introduced an investment plan for the public construction of economic housing. At the end of 1954, Scelba approved a package of measures against Communist Party and trade unions that was largely modelled on United States psychological warfare plans first elaborated in 1951–52. However, it proved to be only an attempt to consolidate his precarious position at home by obtaining formal American backing. Its half-hearted implementation exacerbated Washington's resentment toward its Italian allies and barely affected PCI's organizational structure. The PCI used the episode to denounce the illiberal and authoritarian nature of the Christian Democratic government and to pose itself once more as the real defender of political freedoms and constitutional rights.