Twelve people have been displaced following a 2-alarm fire on 178 Concord St. in Lowell, Massachusetts on Friday morning.
Firefighters battled the blaze from outside the multi-unit home.
Eyewitness Erika Abendano said, "It woke me up. My mom said call 911 and I went outside people were running out the house."
All twelve residents escaped safely and no injuries were reported.
Fire officials credited working smoke detectors in helping to get everyone out of the building.
"The smoke detectors made a huge difference. Working smoke detectors. Everyone got out," said Chief Jeff Winward
The street is full of tightly packed homes. Firefighters managed to keep the flames from spreading. Still, buildings on either side saw some heat damage - siding melting right off of one home.
Just last week, around the same time, firefighters battled another large fire in which a toddler lost his life.
The cause of the fire is still officially under investigation. The owner of the property said it was electrical and began in the front of the second floor.