A fire burned a storage shed behind a Ukiah grocery store early Thursday, is considered an arson. According to the Ukiah Valley Fire Authority, the fire was reported was behind Ukiah Natural Foods in the 700 block of South State Street. The contents inside the metal shed burned during the fire. Surveillance camera video from the business showed a man starting the fire, who was identified by the Ukiah Police Department. The suspect was already in custody in the Mendocino County Jail for an unrelated incident.