Eliza Collins | USA TODAY

Republican lawmakers aren’t giving up on Hillary Clinton’s private email server yet.

On Monday House Oversight and Government Reform Committee Chairman Jason Chaffetz, R-Utah, and House Judiciary Committee Chairman Bob Goodlatte, R-Va., sent a letter to U.S. Attorney for the District of Columbia asking for an investigation into whether she lied when testifying to Congress about her use of a private email server.

“The evidence collected by the FBI during its investigation of Secretary Clinton’s use of a personal email system appears to directly contradict several aspects of her sworn testimony,” Chaffetz and Goodlatte wrote in the letter.

“In light of those contradictions, the Department should investigate and determine whether to prosecute Secretary Clinton for violating statutes that prohibit perjury and false statements to Congress, or any other relevant statutes,” the letter continues.

On July 5 FBI Director James Comey announced that the FBI had completed its investigation into Clinton’s use of her private email server. Comey recommended she not be prosecuted for mishandling classified information despite calling her and her staff "extremely careless" for sending secrets over an unprotected server. The Department of Justice followed through with Comey's recommendation, saying she would not be charged.

The request for a new investigation is not a surprise. Last week when Comey testified before a House panel some Republican lawmakers said that they would seek a Justice Department perjury investigation into Clinton's testimony. Last year, Clinton had testified before the House Benghazi Committee that there had been no emails marked classified on her server, but Comey testified that several had classification markings within the body of the email.

"Republicans are now squandering even more taxpayer dollars in a desperate attempt to keep this issue alive and bring down Secretary Clinton’s poll numbers ahead of the election," said Rep. Elijah Cummings, D-Md., the top Democrat on the Oversight Committee. Democrats contend that Republicans have no specific allegations Clinton lied under oath.

Chaffetz and Goodlatte offered no details in their request letter.

Clinton spokesman Brian Fallon tweeted that the probe was a "futile, partisan" effort to keep the email issue alive.