Rep. Anthony Weiner (D-N.Y.) submitted his letter of resignation from Congress on Monday.

It's expected to be effective at midnight Tuesday.

"We’re hearing that the resignation letter is expected to be laid down on the House floor [Tuesday]. It is not possible to lay down the letter [Monday] (we are no longer in pro forma)," a senior Democratic aide wrote in an email.

Weiner sent the letter to New York Secretary of State Cesar Perales (D), New York Gov. Andrew Cuomo (D) as well as House Speaker BoehnerJohn Andrew BoehnerCan the GOP break its addiction to show biz? House conservatives plot to oust Liz Cheney Ex-Speaker Boehner after Capitol violence: 'The GOP must awaken' MORE (R-Ohio) and Minority Leader Nancy Pelosi (D-Calif.).

"I hereby resign as the Member of the House of Representatives for New York's Ninth Congressional District effective at midnight, Tuesday, June 21. 2011. It has been an honor to serve the people of Queens and Brooklyn," Weiner writes in the brief letter.

The letter comes four days after Weiner announced his intention to resign from Congress. The resignation resulted from the fallout of the lawmaker's admission that he sent lewd photos of himself to women via social web sites. He also admitted to having had "inappropriate" correspondence with at least six women over the past three years.

After his pronouncement, he faced increasing pressure to resign from both the Democratic and Republican leadership. He initially vowed to remain in Congress and went to a rehab facility but, when it became obvious he had lost the support of the Democratic Caucus, he announced his resignation.

He did so in Brooklyn, New York, on Thursday.

—This story was updated at 5:36 p.m.

Read the letter below:

Anthony Weiner resignation letter