Petaluma firefighters found a burnt wicker basket atop a hot stove early Thursday morning, according to a press release.
Authorities responded around 1:25 a.m. to the Downtown River Apartments, 35 E. Washington St., for an alarm triggered by fire sprinklers.
"The first arriving unit investigated the cause and found a fire sprinkler head had activated in the kitchen area of an apartment," a fire department press release states. "A wicker basket had been found on a stovetop and apparently caught fire from a hot stove element. The basket and its contents burned to the point of activating the sprinkler head."
The sprinkler extinguished the fire, but nearby cabinets, a wall and the stove itself were damaged, according to the department. Responders replaced the sprinkler, reset the alarm and left the apartment "in the care of a restorative service," according to the press release.