On 31 March 2005, Rainier III, who was too ill to exercise his duties, relinquished them to his only son and heir, Albert. He died six days later, after a reign of 56 years, with his son succeeding him as Albert II, Sovereign Prince of Monaco. Following a period of official mourning, Prince Albert II formally assumed the princely crown on 12 July 2005, in a celebration that began with a solemn Mass at Saint Nicholas Cathedral, where his father had been buried three months earlier. His accession to the Monégasque throne was a two-step event with a further ceremony, drawing heads of state for an elaborate reception, held on 18 November 2005, at the historic Prince's Palace in Monaco-Ville. On 27 August 2015, Albert II apologised for Monaco's role during World War II in facilitating the deportation of a total of 90 Jews and resistance fighters, of whom only nine survived. "We committed the irreparable in handing over to the neighbouring authorities women, men and a child who had taken refuge with us to escape the persecutions they had suffered in France," Albert said at a ceremony in which a monument to the victims was unveiled at the Monaco cemetery. "In distress, they came specifically to take shelter with us, thinking they would find neutrality."