A Snapchat video from Wednesday night at the historic African-American church shows Roof at a table with the small group. Nothing in the footage suggests the carnage to come.
Police say Roof shot and killed nine people inside the historic Emanuel African Methodist Episcopal Church, near the heart of Charleston's tourist district. Eight died at the scene; a ninth died at a hospital.
Authorities were shocked not only by the killings but that the violence occurred in a house of worship.