The fire broke out just before 10:30 a.m. on the 10th floor of a 49-story building at 145 West 47th Street, near Rockefeller Center, in Midtown.
The building is said to be under construction.
ALSO READ | Anonymous patron pays bills for everyone eating at Staten Island diner
Officials said 20 units and 78 firefighters responded, getting the flames under control in about an hour.
There were seven injuries, with five transported to the hospital and two treated at the scene.
Their conditions are unknown at this time.
The cause of the fire is under investigation.
ALSO READ | Police release images of suspect in deadly subway stabbing near Penn Station
* Get Eyewitness News Delivered
* More Manhattan news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube
Submit a News Tip