Investigation closed as a case because two firefighters died . The fire was at 38 % on Thursday , officials say . The fire has destroyed 64 homes , three commercial properties and 49 outdoor structures since it began last week , authorities said . Station 3 has burned more than 147,000 acres north of Los Angeles . Blaze still forcing some residents to evacuate .
Investigation closed as a case because two firefighters died . The fire was at 38 % on Thursday , officials say . Station 3 has burned more than 147,000 acres north of Los Angeles . Blaze still forcing some residents to evacuate .