MIAMI GARDENS, FL - JANUARY 03: An Ohio State Buckeyes bus drives up to the stadium prior to the Discover Orange Bowl against the Clemson Tigers at Sun Life Stadium on January 3, 2014 in Miami Gardens, Florida. (Photo by Chris Trotman/Getty Images)

An explosion on a PSTA bus today caused a big scare in Largo. A passenger’s backback exploded. The woman in her 20s had second degree burns. Detectives say the cause was likely a lithium battery. An e-cigarette was also in the backback but they don’t know if that was a factor.

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