Hillary Clinton didn't meet with donors to the Clinton Foundation during her tenure at the State Department just to "say hello," Donald Trump said Wednesday, alleging that special favors were exchanged in meetings between the former secretary of state and foreign donors.

"First of all they're not supposed to be setting up meetings and when they set up the meetings, take a look at what is happening. They got a lot of things for this," Trump told Fox News in an interview that aired Wednesday morning.

"Those meetings didn't take place to say hello. Those meetings — they wanted to talk Turkey. These people weren't there to say, 'Gee it's a wonderful day. The weather is beautiful,' " he charged. "You just follow up those meetings and whether it's missiles or planes or something personal, a lot of things happened from those meetings."

Trump said the "pay to play" practices he claimed Clinton engaged in are "beyond belief" and "so bad for our country."

"It's almost as if she can just do whatever she wants to do," he said.

The Republican presidential nominee and his campaign surrogates have intensified their attacks against Clinton and her charitable organization in recent weeks, following the release of new emails that show her top aides at the State Department were in constant contact with foundation donors and frequently granted them meetings with Clinton.

Trump called for a special prosecutor to probe the Clinton Foundation during his rally Tuesday night in Akron, Ohio.

"The amounts involved, the favors done, the significant amount of time, require an expedited investigation by a special prosecutor immediately," he said.