The Secret Service Colombian prostitution scandal could result in more dismissals as the Senate and House Homeland Security committees widen their investigations.

Rep. Peter King, R-N.Y., chairman of the House Homeland Security Committee, said the agency will deal with the situation.

Meanwhile, the Senate Homeland Security panel is trying to determine whether the Colombian incident was an "exception" or a "pattern of misconduct that has gone on elsewhere by Secret Service agents," Sen. Joe Lieberman, I-Conn., said.

So far, six people have been fired because of the scandal. Five more remain on administrative leave.

"I think we expect in the next day or so to see several more agents being forced to leave," King told NBC's "Today Show."

A 12th agent implicated in the scandal is also being investigated for "improprieties" that took place in a separate incident on April 9.

"Now we don't know at this point what that 12th agent is being charged with and why he's been put on administrative leave. But now you're into the hotel where the president of the United States was going to stay. And it just gets more troubling," Lieberman said.