KNOXVILLE, Tenn. (WVLT) - We're learning more about an investigation into a November house explosion in West Knox County.

According to the Knox County Sheriff's Office, there was no evidence of an accelerant in the Blue Water Way explosion and following fire.

Previous Coverage: Investigators working to determine cause of explosion that leveled Knox County home

However, investigators said they haven't ruled out propane gas as a possible fuel source, which was run into the house from an underground tank.

The explosion destroyed the home, prompting response from several fire agencies. It's also still under investigation.