 -- Donald Trump made a startling accusation against President Barack Obama during a Florida rally Wednesday night, telling supporters that the commander-in-chief is the "founder of ISIS."

"ISIS is honoring President Obama," the Republican presidential nominee said during a rally at the BB&T Center in Sunrise. "He is the founder of ISIS. He founded ISIS. And I would say the co-founder would be crooked Hillary Clinton.

Trump's declaration was met with chants of "Lock her up!" from rallygoers.

Trump referred to the president using his middle name, calling him Barack Hussein Obama — a move that's typically been employed by those who claim Obama is secretly a Muslim.

"Radical Islamic terrorism," Trump said. "And people don't like saying that. Our president refuses to use the term. Every time another event happens, I keep saying, I wonder if he's gonna say it this time. And he doesn't say it."

"And Hillary won't say it either," Trump continued. "She doesn't want to say it, 'cause she doesn't want to offend the president, because then bad things could happen to her if she offends the president. Bad things could happen to her. So she's afraid to say it. Hillary's afraid to say it. She did say that she would say it because of me, but she's afraid to say it. But we have a real problem with radical Islamic terror. It's what it is. It's terror."