Although they have not ruled out a possibility that another criminal could be behind the anthrax attacks, investigators are intensely looking at evidentiary threads linking the letters to the hijackers.(WebCorp)
When asked about his future plans, Ben merely replied, "I have not yet ruled out a possibility of running in the upcoming race for Governor of California."(WebCorp)
Melnikov ruled out a possibility that some other company except “Slavneftebank”, acting on behalf of “Sibneft”, will engage in the bidding, for the deadline for submitting application expired on November 20, 2002. (WebCorp) .