UGM-UPN close probe into mysterious fire in Sleman home
UPN ruled out a link to gas bubbles in Sungai Nepen, while UGM found solvent and PVC resin may have created a flammable mix.
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UGM: Mysterious fire at Fia's Sleman home not from natural gas
Researchers found PVC residue from a solvent mixture, indicating the fire needed an ignition source and did not start on its own.