FEDERAL WAY, Wash. (AP) — A fire in a strip mall gutted a Subway sandwich shop and damaged at least eight other businesses Sunday at Federal Way, Washington.

KOMO-TV reports that one firefighter suffered a minor injury while fighting the flames. No one else was hurt.

The fire broke out just before 5 a.m. Sunday at the mall that includes three separate buildings. A business in a second building had some minor damage. The third building was not damaged.

The first building was home to a Subway sandwich shop, a Hispanic grocery store, an Asian restaurant, a Vape shop and several other businesses.

Several different agencies responded.

Authorities say it could take some time to determine how the fire started.