A former Republican U.S. attorney for the District of Connecticut says President Donald Trump's voter fraud allegations are undermining the credibility of the election process.

Stanley Twardy, who was appointed by Ronald Reagan, says he wants to see the hard evidence of the voter fraud claims made by Trump's campaign and legal team.

Twardy is one of 19 former U.S. attorneys who wrote a statement about Trump's comments on Twitter and from his most recent news conference last week.

The group wrote in a statement on Friday that the allegations of fraud and threats to litigate are "aimed at stopping the vote count, clearly inappropriate, and have the potential to undermine the rule of law as it applies to our electoral process"

Twardy says these allegations Trump posted on Twitter, before the election even took place, were disruptive to the process.

"The tweets aren't going to get him anywhere in the courts itself…just because someone tweets something, doesn't mean it's true," Twardy says. "The principles that we have as Republicans is to believe in the rule of law in our system of government and to make sure that the public has confidence in the system of government."

The letter also states the electoral process must be allowed to take place in a way that is open, fair and lawful and without any improper political interference.

"The lawyers for the president are actually going to have to come up with the facts to support these tweets to support these allegations," Twardy says. "And from what I'm seeing, there's very little indications of that. There's been one or two situations where the courts have gotten involved, but nothing really widespread."

Former U.S. attorneys from New York, Massachusetts, and Washington, D.C. also signed the letter.

Trump's legal team will file several more lawsuits in battleground election states, challenging the integrity of the election process in these states.