 In June 1937, Nello went to visit his brother, Carlo, at the French resort town of Bagnoles-de-l'Orne, Orne.On 9 June, the two were killed by a group of ""cagoulards"", militants of the Cagoule, a French fascist group, with archival documents implicating Mussolini's regime in authorizing the murder.The two brothers were buried in the Père Lachaise Cemetery in Paris but in the 1951 the family moved them to Italy into the Monumental Cemetery of Trespiano, a frazione of Florence.