At least one person was injured after a building explosion in Florida, where a gas leak was also discovered. The exact cause of the blast is still under investigation. | NBC News

Crews are responding to a massive fire at a building in Hayward after a reported explosion. Watch live coverage here. | ABC7 News

Dramatic footage captured by a home's Ring doorbell camera shows a massive explosion rocking a large building across the street in Hayward, California. At least six people were transported to the hospital Thursday morning after a massive explosion caused a large fire. | ABC30 Action News