People online are trying to figure out what made this laundromat dryer explode with such force that it knocked out the front of the building. The security camera footage shows a customer leaving the laundromat. A few seconds later, one of the dryers, which had been tumbling a load of clothes, blows up in a fiery explosion. He probably would have been killed in the blast if he'd lingered a bit longer.
Twitter has been awash with speculation regarding the cause of the explosion. Among the suggested culprits are lint, lithium batteries, shotgun shells, C4, grease-saturated clothes, gas leaks, and even a butane lighter. What's your guess?