Updated July 29 Fire investigators call Auburn fire accidental The July 19 blaze at the 6-unit apartment building was caused by electrical failure, officials say. Read Article A fire investigator tosses debris July 19 from a second-story window of an apartment building at 68 High St. in Auburn. A team from state and local agencies investigated the cause. The Maine Office of State Fire Marshal determined that the cause of the fire at 68 High St. on July 19 was an accidental electrical failure. Russ Dillingham/Sun Journal file AUBURN — A fire that swept through an apartment building last week displacing more than a dozen tenants was accidental, fire officials said Thursday.