01/04/21 - UPDATE
The Council Bluffs Fire Department said it is still unable to determine the cause of the fire but did say that it doesn't appear to be suspicious in nature.
The investigation will be ongoing "for an extended period of time" and "numerous outside agencies are looking into the cause."
12/31/20 - PREVIOUS STORY
An investigation continues into what caused a fire at the Council Bluffs airport that destroyed one plane and damaged several others.
The fire broke out Wednesday morning at the Western Iowa airport, sending thick black smoke into the air. Firefighters extinguished the blaze in about 40 minutes.
Authorities say one plane was a total loss and others sustained smoke damage. Officials have not yet estimated the financial toll.