THE BRONX - Emergency crews have blocked off a Kingsbridge Heights home after its roof collapsed. 

The entire top floor of the three-story home on University Avenue pancaked at around 9 a.m. 

Police and the FDNY are on the scene, but are not sending anyone inside at this time because the structure is still unstable. 

Authorities say all residents have been accounted for, and no injuries reported. 

For extended footage of the roof collapse, watch the clip to the left or click News 12 Extra on Optimum TV channel 612.