DONALD Trump revealed the White House is probing reports of a plane "loaded with thugs in black uniforms" who headed to the RNC to cause "big damage".
The President also claimed on the final night of the convention were bankrolled by "stupid rich people."
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"The money is coming from some very stupid rich people (who) have no idea that if their thing ever succeeded, which it won't, they will be thrown to the wolves like you've never seen before," he said.
He made his claims in on Monday night - days after protesters took to the streets of Washington DC in the wake of the cop shooting of last week.
Trump also claimed that rival was having his "strings" pulled by "people in the dark shadows."
Fox interviewer Laura Ingraham then said his remarkable claims sounded "like conspiracy theory."
He replied: "They are people that are on the streets, people who are controlling the streets.
"We had somebody get on a plane from a certain city, this weekend. And in the plane it was almost completely loaded with thugs wearing these dark uniforms, black uniforms, with gear and this and that.
"This person was coming to the Republican National Convention and there were like seven people in the plane (with) this person, and then a lot of people were on the plane to do big damage."
When pressed for more information, he replied: "I'll tell you some time. It's under investigation right now."
The President also criticized those corporations who have supported the movement saying they were taking "a very dangerous path."
"Black Lives Matter is a Marxist organization," he said.
"You remember (them chanting) 'Pigs in a blanket, fry them like bacon' (in 2015).
"That was the first time I ever heard of Black Lives Matter," he said. "I said, 'That's a terrible name, it's so discriminatory.'"
Trump alsao said if he wasn't president the US "would have riots like you've never seen".
He was speaking in response to Joe Biden's claim that the unrest witnessed in cities across America is a result of "Donald Trump's America."
"So if it weren't 'Donald Trump's America,' to just use the expression, as I'm president, you would have riots like you've never seen," he blasted.
"The Democrats have lost control of the radical left," Trump then added.
The president then labeled Mayor Ted Wheeler "incompetent" after he blamed Trump for the violent confrontation which led to over the weekend.
"I've offered to send in the National Guard. I've offered to send in anybody they want," he said.
"I could put that (unrest) out in 45 minutes and it would stop. And I think the people of Portland and the people of Oregon...they're tired of it. They're tired...of living with this curse."
He then told his supporters not to get dragged into future confrontations with anti-Trump protesters and to "leave it to law enforcement."
"But my supporters are wonderful, hardworking, tremendous people," he then added.
"And they turn on the television set and they look at a Portland or they look at a Kenosha before I got involved and stopped it."
Trump's words came hours after - the 17-year-old who shot two people dead during protests in Wisconsin.
He said the teen - one of his supporters - "probably would have been killed" by an angry mob if he hadn't fired at them with his illegal gun.
The shocking shooting came amid nationwide protests against police violence.
Some of those attending the RNC were assaulted and accosted by a large crowd of protesters as they left the White House on Thursday night.
Senator Rand Paul and his wife told how they were attacked by "crazed" protesters after leaving the convention.
They were targeted by what he described as an "angry mob" of more than 100 and had to be rescued by cops who he said saved their lives.
The President later called for the Washington DC "agitators" to be arrested over their actions.
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tagged DC Mayor Muriel Bowser, as he called for demonstrators to be arrested amid increasing unrest.
". should arrest these agitators and thugs!" Trump tweeted on Sunday morning.
"Clean up D.C. or the Federal Government will do it for you. Enough!!! " he added.
Despite some unrest, demonstrations have been largely peaceful across the nation.