Half of the United States thinks it's at least somewhat likely there will be a terrorist attack at the Winter Olympics in Sochi, Russia, next month, according to a new poll.

The Quinnipiac poll shows 12 percent think it's "very likely," while 38 percent think it's "somewhat likely."

Another 45 percent say it's "somewhat unlikely" (26 percent) or "very unlikely" (19 percent).

Recent threats to some European countries' Olympics offices have largely been dismissed as hoaxes, but there continue to be concerns about an attack marring the games.

Terrorist threats have become a part of almost every Olympic Games in recent years, with attacks on Munich in 1972 and Atlanta in 1996 being among the most well-known.