On 6 June 2007, all five individuals were cleared by the court of murdering Calvi. Mario Lucio d'Andria, the presiding judge at the trial, threw out the charges citing "insufficient evidence" after hearing 20 months of evidence. The verdict was seen as a surprise by some observers. The court ruled that Calvi's death was murder and not suicide. The defence had suggested that there were plenty of people with a motive for Calvi's murder, including Vatican officials and Mafia figures who wanted to ensure his silence. Legal experts who had followed the trial said that the prosecutors found it hard to present a convincing case due to the 25 years that had elapsed since Calvi's death. An additional factor was that some key witnesses were unwilling to testify, untraceable, or dead. The prosecution had earlier called for Manuela Kleinszig to be cleared, stating that there was insufficient evidence against her, but it had sought life sentences for the four men.