Nor was there any immediate clue in the plane's flight and maintenance records to suggest what might have caused the problem, officials said.

No immediate clue as to their value.

When the name doesn't provide an immediate clue, the picture on the front of the box does.

But police said they had no immediate clue as to the identity of the attackers.

Police said they had no immediate clues.

The police said they had no immediate clues to the identity of the attackers.

The immediate clue to Sark's disappearance was an elevator with its dial pointing to the figure one.

The police said there were no immediate clues or suspects.

Security officials said they had no immediate clues to who was responsible.

Police and military officials said they had no immediate clue as to the identity of the gunmen, or the motive behind the killing.