WATERLOO, Iowa (KCRG TV9) -- Authorities in Waterloo tell TV9 they're investigating an apartment fire that happened Friday afternoon.
Fire crews were called to 1117 South Street around 5 p.m.
Authorities say a fire started under a back patio, then spread to the second story.
No one was hurt, but authorities say all four apartments have smoke damage.
The fire department says its investigating the cause of the fire.