Three months after the release of Abdelbaset al-Megrahi, the families of American victims of the Lockerbie bombing have reignited a row over the medical advice that allowed him to be freed early from his 27-year sentence.

Megrahi was released on compassionate grounds from prison in Greenock on 20 August after the Scottish justice minister, Kenny MacAskill, received advice that he was terminally ill with prostate cancer. It was said that the Libyan, who was convicted of carrying out the bombing, only had three months to live.