Rescue crews have been combing through the rubble for three to five people who might have been at the site before the Saturday morning blast.
Four injured in the explosion were taken to Carilion Stonewall Jackson Hospital hospital.
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State police opened a criminal investigation at the behest of local authorities. However, Garletts emphasized that every investigation by his bureau is a criminal inquiry until the facts prove otherwise.
3 sets of human remains found in rubble of Virginia gas station explosion
At least one person was killed and two more are presumed dead after a massive explosion took place at an Illinois silicone factory Friday night, officials said.
Explosion at Illinois factory kills one person, two more presumed dead, officials say | Fox News