One report was of a Maryland tag, but investigators declined to comment.

But prosecutors and investigators declined to elaborate on the specifics of the investigation, evidence or possible motives.

At the end of the day, investigators again declined to say what, if anything, was found at the house, which has been vacant since 1995.

The various investigators, their efforts barely begun, decline to speak of them in detail.

There were no arrests, and investigators declined comment on a motive.

The committee is expected to close down at the end of November, and investigators declined to discuss whether it might extend its life beyond then.

The documents did not identify the American companies, and investigators declined to.

The investigators spent about 40 minutes inside the apartment and declined to speak to reporters when they emerged.

Now investigators are declining even to discuss their earlier assertions and court filings.

More than a dozen investigators declined to participate, however.