Washington (CNN) - The chair of the Senate Intelligence Committee has read the reports on terrorist threats to the Sochi Olympics, and she has a message for anyone traveling to the Winter Games: Watch your backs.

"The threat stream is credible, I think it's real," Sen. Dianne Feinstein, D-California, told CNN's "The Lead with Jake Tapper."

Feinstein noted at least one terrorist group – the Caucasus Emirate – has made threats and "is conceivably capable of carrying out an attack."

"People going to the Olympics should be careful, I think they should watch their backs, I think they should stay out of crowds if they can," said Feinstein.
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