NEW YORK (CBSNewYork) — Firefighters are investigating after a blaze that was extinguished Sunday reignited overnight at a five-story building in lower Manhattan.

Crews were called to the building on Fulton Street around 2 a.m. for the second morning in a row. Firefighters spent all day Sunday battling a 4-alarm fire at that building, but it rekindled overnight.

“The fire was definitely out and we come back this morning and the third, fourth and fifth floors are full of fire,” said Deputy Assistant Chief Jack Mooney.

The fire went to a 3rd alarm before 4 a.m. Fire department officials said there was a partial roof collapse.

The building is mixed-occupancy.

Firefighters said it’s still too soon to know how the blaze started and said the fire marshal is investigating. Firefighters expect to be on the scene most of the day Monday to make absolutely sure the fire is completely out.

One firefighter was treated for burn injuries to his face.

Watch & Listen LIVE