The fire broke out on East Congress Street in Allentown around 10:30 p.m. Sunday night.
Police were reportedly first to arrive on scene and encountered heavy fire showing from the rear of the home. Fire crews arrived a short time later, confirming a working fire and beginning an aggressive attack on the blaze.
Officials say the fire was brought under control by around midnight.
Two people were transported to the hospital following the incident. The severity of their injuries has not yet been released.
Firefighters remained on scene for an extended period checking for hot spots and investigating the cause of the fire.
The cause of the blaze remains under investigation.
Photos credit of Lehigh Valley Fire Scene Photos
