Updated: 07/06/2014 8:39 PM
Created: 07/06/2014 8:30 PM WHEC.com
By: Associated Press
Fire officials say smoke detectors were installed last year inside a Philadelphia row home where four children died in a fast-moving blaze.
Fire Commissioner Derrick Sawyer says the department had installed two smoke alarms in the home. The Saturday morning blaze killed three 4-year-olds and a baby and engulfed at least 10 residences.
Investigators are still trying to determine what caused the fire. One witness says he saw a couch on a porch on fire and saw the flames spread to other residences.
Twin sisters Maria and Marialla Bowah were among the dead. Their mother was home with seven children and managed to escape with three of them.
A pair of brothers, 4-year-old Patrick Sanyeah and 1-month-old Taj Jaque, also died in the fire. Their mother wasn't home.