A 27-year department veteran, 51-year-old Williamson was crushed by rubble at 300 W, Indiana Ave., which went up in flames around 2 a.m., fire officials said. Around 90 minutes later, it collapsed.
Four other firefighters and a Licensing and Inspections Department inspector were pulled from the rubble and treated at Temple University Hospital, officials said.
"This is a heartbreaking day for our city," Mayor Jim Kenney said. "I want to express my sincere gratitude and commend our first responders who responded swiftly and bravely to save lives."
Click here to follow Daily Voice Pascack Valley and receive free news updates.