Russian security forces patrol the Olympic Park in Sochi, Russia. (Scott Halleran/Getty Images)

House Homeland Security Chairman Michael McCaul (R-Tex.) on Sunday expressed deep concern about the possibility of a terror attack near the Winter Olympics in Sochi, Russia.

"I think there's a high degree of probability that something will detonate, something will go off," McCaul said on "Fox News Sunday." "But I do think it's probably most likely to happen outside the Ring of Steel and the Olympic Village."

He added: "I hope I'm wrong in this assessment."

McCaul said the two biggest threats surrounding the Olympics involve the aviation sector and the prospect of suicide bombers. McCaul said Russian authorities have been cooperative when it comes to external operations outside the country, but less so on internal concerns.

"I think this particular Olympics -- I've never seen a great threat, certainly in my lifetime," he said.

Rep. Adam B. Schiff (D-Calif.), who sits on the House Intelligence Committee, said that he thinks it's "relatively and manageable safe" to be at the Games. But he agreed with McCaul that Russians haven't been cooperative enough on internal matters. House Intelligence Committee Chairman Mike Rogers (R-Mich.) echoed that sentiment, saying on ABC's "This Week with George Stephanopoulos" that he wished Russia would share "more internal information on security threats."

Rep. Peter King (R-N.Y.), who sits on the Homeland Security and Intelligence Committees, cautioned against complacency.

"So far, so good.  I mean, it's a long haul," he said on CBS's "Face the Nation." There's still several weeks to go. It's still, I believe, a dangerous situation.  But up 'till now, there's been no incidents at all. And again, hopefully, this will continue over the next two weeks and we can focus on the games. But the worst thing we can do in any way is to anyone let their guard down between now and the end of the games.