Two lockers at a storage facility in Auburn were engulfed in flames on Sunday night, according to the Auburn Fire Department.

At 7:49 p.m. Sunday, firefighters received reports of a fire at AllStorage, 361 Genesee St. When responders arrived five minutes later, the two storage lockers were caught in a fully involved structure fire.

Additionally, heavy smoke was seen coming from 10 other storage units in the immediate area, according to Assistant Chief Mark Fritz.

To battle the blaze, firefighters were forced to cut their way into the steel-walled lockers with a metal cutter. The doors on all 12 of the units were locked, so firefighters had to force entry to put out the flames and make sure the fire had not extended to the other 10 storage units, Fritz said.

In doing so, one firefighter suffered a hand laceration, which was treated at the scene. The fire was eventually brought under control in about 35 minutes. A cause is still under investigation.

"I believe the investigation is leaning toward that the fire started from inside one of the lockers and spread to the second," Fritz said.

At this point, fire investigators are unsure of what was inside of the storage units. Fritz said both units were a total loss, located back-to-back from one another. One was a 5-by-10-foot unit while the other was 25-by-10-foot space.

Fire investigators believe the fire started in the smaller unit and spread to the larger one, Fritz said.

The other 10 units suffered a moderate level of damage from various factors including smoke, water and heat.

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Staff writer Greg Mason can be reached at (315) 282-2239 or greg.mason@lee.net. Follow him on Twitter @CitizenMason.