It's been less than a week since a massive explosion near Hayward after a construction crew hit a gas line, and now concerned neighbors are demanding answers from the Alameda County Board of Supervisors.

The blast sent six people to the hospital. A PG&E spokeswoman said a construction crew reported striking an underground gas line hours before the incident.

A gas line explosion in Hayward, Calif., sent multiple victims to the hospital and led to a fire that burned several houses.