SILVER SPRING, Md. — One year after a fatal explosion rocked a Washington, D.C.-area apartment complex and prompted changes in local laws, those affected are still recovering.

News outlets report that in August 2016, a basement utility room at a Silver Spring, Maryland complex filled with natural gas and exploded, leading to a massive fire and building collapse. Seven people died and more than 30 suffered injuries. Roughly 80 people were displaced.

Many of the victims joined lawsuits against Washington Gas and property management company Kay Apartment Communities. What caused the gas leak and explosion is still unknown. The National Transportation Safety Board continues to investigate.

Since the explosion, the Montgomery County Council passed a stalled landlord-tenant bill, which created tenant advocates in the Consumer Protection Office and added inspectors to the Housing Department.