LONDON (AP) - A cancer expert who examined Lockerbie bomber Abdel Baset al-Megrahi before his release from a British prison says doctors should have been more cautious about the prisoner's chances of survival.

Al-Megrahi, who has prostate cancer, was released on compassionate grounds from a Scottish prison in August 2009, and returned to his country, Libya. Experts believed he had only three months to live.

Karol Sikora, who assessed al-Megrahi for Libya's government, is quoted in Britain's Sunday Observer newspaper as questioning that advice. He says, "If I could go back in time, I would have probably been more vague."

Al-Megrahi is the only person convicted over the 1988 bombing of a jetliner above Lockerbie, Scotland, that killed 259 people, mostly Americans.

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