A ferry connecting an island off the coast of Georgia resumed operations Monday while the investigation to see what might have caused a deadly dock collapse that killed seven people continues. The victims were among the dozens of people who traveled to Sapelo Island last weekend to celebrate the Gullah-Geechee,

As state officials investigate what caused the Sapelo Island dock collapse, there are questions surrounding the gangway’s construction and how many people it should have supported.

Georgia authorities said Sunday they are investigating the “catastrophic failure” of a dock gangway that collapsed and killed seven people on an island off the state’s Atlantic seacoast, where crowds gathered for a celebration by the island’s tiny Gullah-Geechee community of Black slave descendants.