Dept. of Homeland Security issues security bulletin ahead of Olympic Games in Sochi

SOCHI, Russia - U.S. officials are warning about a possible threat concerning travel to Sochi.

A bulletin from the U.S. Department of Homeland Security warns that toothpaste tubes and cosmetic containers could be used to smuggle explosive materials on flights into Russia or Sochi.

"The Olympic site itself probably is locked down pretty well," Rep. Peter King of New York said. "There is that ring of steel around the Olympics itself. But getting there and the surrounding areas I would say there's real cause for concern."

A U.S. law enforcement official says the alert is specific to the start of the Olympics. That source says intelligence is getting reports about transportation hubs outside Sochi.

Secretary of State John Kerry says people who want to go to the Olympics should still go.

"We feel that everything has been done that can be done to try to guarantee people's safety and security," Kerry said.

Kerry says the venues will be as safe as any large public event can be.