Harlem apartment fire leaves tenant in serious condition; FDNY

A fire broke out at an apartment building in East Harlem overnight Tuesday.

FDNY officials said the fire started on the fifth floor of the 15-story building and began to spread quickly.

Firefighters battled the fire at 5th Avenue and 108th Street for nearly an hour.  

One person was transported to a nearby hospital in serious condition. 

Officials say the fire is under control at this time, but the cause is still under investigation. 

This story is developing. Check back for updates.