ROCHESTER, N.Y. (WROC) — Firefighters were called to Scio Street in Rochester Thursday night, for a massive fire at City Blue Imaging.

Heavy smoke was seen pouring from the print shop around 10:45 p.m. The flames eventually burst through the roof, and caused a section of wall to collapse.

“Crews were initially able to gain access inside the building where they were met with high heat and heavy smoke conditions. This fire was very difficult to fight because of the size of the building, its limited entry points, and lack of windows,” said Lieutenant Ryan Fleming of the Rochester Fire Department.

Fleming also said that there were 70 firefighters on scene, and no civilians were hurt, though one firefighter had a minor injury.

The building is located on Scio Street between East Main Street and East Avenue. That portion of the roadway is closed while fire crews work to put out the fire.

The cause of the fire is still under investigation.

This is a developing story. Check back for updates.