JEFFERSON, Iowa (AP) -

Authorities say several firefighters have been treated for minor injuries suffered while fighting a restaurant blaze in central Iowa.

Des Moines television station KCCI reports the fire was reported early Sunday morning in Jefferson, which sits about 50 miles northwest of Des Moines.

Jefferson Fire Chief Randy Love says the flames had spread throughout the inside of Larry's Restaurant and Lounge by the time firefighters arrived. Crews from five fire departments were called in to battle the blaze.

The building is considered a total loss. The fire cause is being investigated.