Two people climb to the top of Empire State Building with massive banner

Two masked people climbed on top of the Empire State Building Wednesday afternoon holding a banner reading "when the power of love beats the love of power, the world knows peace."

Following a response by the New York City Police Department (NYPD), the pair appeared to take down the banner and climb down to a lower platform.

One of the people then appeared to pull an engagement ring out of a backpack, get down on one knee and propose.

It is unclear how the couple were able to scale the building.

Roughly 40 police officers remain in front of the building. Others are directing traffic around the building.

The entrance on Fifth Ave., between West 33rd and 34th streets, is blocked off. 

Pedestrians were seen gathering on every corner surrounding the building watching the situation unfold.

Counting the spire and antenna, the skyscraper stands 1,454 feet tall. 

It is currently the fourth-tallest building in New York City, the sixth-tallest in the U.S., and the 43rd tallest tower in the world.

This is a developing story. Please check back for updates.