Investigators say a plane crash in San Diego that likely killed six people happened as the private plane approached an airport whose runway lights were out in heavy fog.

Sound Talent Group co-founder and agent Dave Shapiro died in a plane crash in San Diego, Calif. on Thursday morning, per the National Independent Talent Organization (NITO). A founding member of NITO,

Friends paid tribute to Daniel Williams, a former drummer for the metalcore band The Devil Wears Prada, and Dave Shapiro, a music agent who worked with Sum 41, Hanson and other bands.