BOISE -- Crews worked to extinguish an early-morning fire that broke out in Boise's North End Friday.

The fire started at 3:47 a.m. next to a home at 610 North 14th Street. Boise Fire spokeswoman Char Jackson said the blaze was in an outbuilding that had been converted into a game room on the back side of the property.

Jackson said the outbuilding was about 116 years old.

One man inside the home was able to get out safely. The fire downed power lines, knocking out power to three homes.

Boise Fire responded and quickly put out the flames.

The cause of the fire remains under investigation.