London - A Boeing 727 plane, whose sudden disappearance in Angola in May unverved American intelligence agencies, reappeared last week in the Guinean capital Conakry before vanishing once again, the British newspaper The Guardian reported on Monday.

Washington has been working with African governments in the past month in a frantic bid to hunt down the cargo plane, amid fears the aircraft could be used by terrorists in a repeat of the September 11 attacks.

The paper said the plane was spotted on June 28 by a Canadian pilot, Bob Strother, in Conakry, sporting a new coat of paint and a Guinean registration number.

But Strother told the paper that two letters of the plane's old tail number - N844AA - were still showing, proving the aircraft was the same Boeing that was being sought by US diplomats throughout Africa.

"There's absolutely no doubt it's the same aircraft, the old registration is clearly visible," he was quoted as saying.

"Whoever owns it must have some important friends to get it re-registered in two days: going by the book, the whole process usually takes a couple of months," he added.

"We only saw it that one time, now it's gone".[...]