Mayor de Blasio has requested that a number of prominent buildings and landmarks located along the city's skyline briefly dim their lights tonight in memory of murdered NYPD officers Wenjian Liu and Rafael Ramos.

Starting at 9 p.m. tonight, the Empire State Building, Chrysler Building, One World Trade Center, 30 Rockefeller Plaza, 4 Times Square and One Bryant Park will all dim their lights, as will the Rockefeller Center Christmas Tree. The few minutes of darkness follow a citywide moment of silence at 2:47 p.m. today to memorialize Liu and Ramos, who were shot to death on Saturday by Ismaaiyl Brinsley. In a statement by the mayor that preceded the observance, de Blasio said:

Our city is in pain. We ask all New Yorkers to turn their thoughts to our shared identity as New Yorkers and to honoring the memories of the two fine men we lost. Tonight, some of the greatest emblems of our city will dim their lights to honor our fallen police officers. Let us take these moments to reflect on our common values, and rededicate ourselves to moving this city forward together. We thank our fellow New Yorkers at each of these buildings and landmarks for joining us in this expression of remembrance.

The landmarks will turn the lights back up at 9:05 p.m.

Ramos's funeral will be held on Saturday. White House spokesperson Eric Schultz just announced that "the President has asked Vice President Biden to attend the service for Officer Rafael Ramos and is grateful that the Vice President and Dr. Jill Biden will be traveling to New York City to attend the service on Saturday. Additional details will be forthcoming from the Vice President’s office.”