Mafia boss known as 'the Beast' who was behind 150 murders and ordered an informant's 13-year-old son be dissolved in acid dies of cancer aged 87 in prison hospital <br />Sicilian Mafia boss Salvatore 'Toto' Riina succumbed to his battle with cancer <br />Riina was serving 26 life sentences and is believed to have ordered the killing of more that 150 men <br />Riina once ordered the death of an informant's 13-year-old son, who was strangled and dissolved in acid <br />Italy's high court caused outrage earlier this year when it ruled that Riina 'deserved to die with dignity' in his own home as he fought terminal cancer <br />However the decision was left with a parole board which had not made a decision to free him and he died in prison hospital
