A gas explosion tore through a neighbourhood near Hayward in California’s East Bay, destroying at least one home and sending six people to hospital, fire officials said.⁣ ⁣ Dramatic doorbell camera footage shows the house exploding seconds after construction work damaged an underground gas line. Windows were blown out, debris was hurled into the air and nearby homes shook from the blast.⁣ ⁣ Authorities say gas had been leaking for nearly two hours before the explosion. The National Transportation Safety Board has launched an investigation.⁣ ⁣ #explosion #sanfrancisco #california #viral