Demolition underway as investigators seek cause of Allentown fire

ALLENTOWN, Pennsylvania (WPVI) -- Investigators are still working to determine the cause of a devastating fire in Allentown, Pennsylvania on Sunday morning.

Officials with the utility company, UGI, said they found no signs of a gas leak but additional tests were still pending.

A resident of Fountain Street in Allentown captures the moments after a house explodes and collapses, October 20, 2019

Neighbors reported hearing a large blast, along the 700 block of Fountain Street, around 3 a.m. but authorities are not calling it an explosion.

Roughly 47 people, including 13 families, were displaced by the blaze.

Demolition crews are now working to tear down the 10 row homes damaged by fire.

Investigators hope to determine a cause soon.