Donald Trump went on the offensive Monday, hitting the airwaves to fire back at claims from New York's attorney general that his Trump University is a fraud.

The billionaire real-estate developer made it clear that he believes a $40 million lawsuit from New York's attorney general, Democrat Eric Schneiderman, is politically motivated — and could even have come at the behest of President Barack Obama.

Trump said on both MSNBC's "Morning Joe" and on Fox News' "Fox and Friends" that Schneiderman had met Obama last week, less than 48 hours before the suit was filed.

"They [met] on Thursday evening," Trump said on Fox. "I get sued on Saturday at 1 o'clock. Think of it. What government agency in the history of this country has ever brought a suit on a Saturday? I never heard of such a thing."

"It was a terribly drawn suit — incompetently drawn suit," Trump added. "They obviously did it very quickly."

On "Morning Joe," he said " Maybe it was because of Obama, I don't know, you people are going to have to check it out."

Schneiderman's suit alleges that Trump University defrauded more than 5,000 people by offering free get-rich-quick seminars, and accused Trump of operating a bait and switch.

"Trading on his celebrity status, Mr. Trump personally appeared in advertisements making false promises to convince people to spend tens of thousands of dollars they couldn’t afford for lessons they never got," Schneiderman said, according to The New York Daily News. "No one, no matter how rich or famous they are, has a right to scam hardworking New Yorkers. Anyone who does should expect to be held accountable."

But Trump said Schneiderman's suit was unfounded.

"It's really an unfair situation," he said on Fox. "We have this wonderful school. It did a terrific job. They were really fantastic.

"You have an attorney general, Eric Schneiderman, who really is a lightweight. He's not respected by anybody. He's got an approval rating — his high rating is about 4 percent — and by the way, our approval rating on the school is 98 percent. Ninety-eight percent of the people that took the courses give it a really great rating.

"So we have this fantastic school and he went after it, for political reasons."