[Updated at 8:27 a.m. ET] Port Authority spokesman Steve Coleman says there is no fire at the site. The FDNY received a call of a fire in the tower, but found no active fire upon arrival.
[Posted at 8:27 a.m. ET] Firefighters are responding to a fire on the 88th floor of 1 World Trade CEnter, according to FDNY spokesman Joe Perez.
The building is currently under construction on the site of the former World Trade Center towers.
About 84 firefighters are on the scene, Perez told CNN. No smoke or fire is visible from a CNN tower cam focused on the building.