Alicia Machado campaigning for Hillary Clinton on August 20 in Miami. Gustavo Caballero/Getty Images Republican presidential nominee Donald Trump unleashed a stream of tweets Friday morning attacking former Miss Universe Alicia Machado.

Trump said Machado "duped and used" Hillary Clinton, who mentioned the 1996 pageant winner near the end of Monday night's presidential debate to go after Trump.

Trump had called Machado "Miss Piggy" and "'Miss Housekeeping,' because she was Latina," Clinton said.

Since the debate, Trump surrogates and conservative-leaning publications have worked to discredit Machado, bringing up past allegations that she was a murder accomplice in Venezuela. They have also suggested that she appeared in a sex tape, a claim that was labeled "mostly false" by Snopes, the website that examines the validity of internet rumors.

"Using Alicia M in the debate as a paragon of virtue just shows that Crooked Hillary suffers from BAD JUDGEMENT!" Trump said in one of the tweets.

View the tweets below:

When confronted by CNN anchor Anderson Cooper over allegations that she drove a getaway car from a 1998 murder scene, Machado didn't deny the charges, instead saying she was "not a saint girl."

"You know, I have my past," she said. "Of course, everybody has a past. I'm not a saint girl. But that is not the point now."

Since Clinton brought up Machado in Monday's debate, Trump has continually defended his actions toward her.

"I saved her job because they wanted to fire her for putting on so much weight," Trump told Fox News' Bill O'Reilly on Wednesday night. "They know what they're getting into — it's a beauty contest. And I said don't do that. Let her try and lose the weight."