FDNY is on the scene, and evacuation is underway.

Fire on 51st and 7 #nyc #fire #smoke #firefighters #slowmo

A video posted by Igor Dukhnovskyi (@igorsphoto) on

https://twitter.com/OMGSweetCheeks/status/420281164226494464

http://instagram.com/p/i1u1niLtMf/

The building may look familiar:

We hope everyone is safe.

We will continue to monitor this situation and update with developments.

Editor’s note: This post has been updated with additional tweets.

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Update:

Celebrated chef Eric Ripert tweeted from nearby:

https://twitter.com/ericripert/status/420279464745267200

https://twitter.com/ericripert/status/420279543862394880

http://instagram.com/p/i1u36mLtMj/

https://twitter.com/ericripert/status/420282535428780032

https://twitter.com/ericripert/status/420282615485444096

http://instagram.com/p/i1wRU9rtO9/

More from the scene:

https://twitter.com/JasonDuaine/status/420286110036951040

Explosion and (probably electrical) fire near the Time & Life building.

A video posted by Jason Duaine Hahn (@jasonduaine) on

Reports indicate it was a manhole fire:

So far, no injuries have been reported.

https://twitter.com/ericripert/status/420288641014185984

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Related:

Residents trapped in burning Manhattan high-rise; Man tweets from inside [pics, video]