From The Mercury: Al-Qaeda blueprint exposed [29dec03]:
"British MP Patrick Mercer has revealed Saudi authorities arrested two Islamic suicide pilots. He said the pilots were preparing to crash two light aircraft into a packed British Airways passenger jet while it was still on the tarmac at the airport in the Saudi capital of Riyadh.
Both light planes had been crammed with explosives. And Italian Prime Minister Silvio Berlusconi said he had received reliable intelligence of a Christmas Day plan to assassinate the Pope and destroy the Vatican by flying a hijacked plane into it. "