Medford firefighters quickly extinguished a small fire burning under the floor of Affordable Dental, 826 E. Main St., this morning.

Employees reported seeing flickering lights, smelling smoke, then seeing light smoke in the office. They called 9-1-1 and evacuated the building at 10:49 a.m.

Fire and police vehicles blocked one lane of East Main Street while emergency crews worked.

Firefighters found a small fire burning under the dental office’s floor, put it out, then placed fans to push lingering smoke out of the building, Medford Deputy Fire Chief Larry Anderson said. The cause of the fire is under investigation.