One person is unaccounted for after an apartment fire on the city's Northeast side on Sunday afternoon. Shortly before 5 p.m., San Antonio firefighters responded to the fire on Ray Bon Drive in the Windcrest area. Eleven residents were displaced, and the Red Cross is helping them with a place to stay. Firefighters are searching for a missing resident. Fire investigators say the blaze may have resulted from a domestic altercation. No firefighters were injured. So far there's no estimate of the damage done by the fire.