SAN DIEGO >> A plane crash in San Diego that killed six people, including groundbreaking alternative music executive Dave Shapiro, happened as the private plane approached an airport whose runway lights were out in heavy fog, investigators said.

It could take a year to sort out exactly what happened to the plane that hit power lines and crashed into a neighborhood just before 4 a.m. Thursday. But investigators know there was thick fog, problems with the runway lights and a broken weather alert system, Dan Baker of the National Transportation Safety Board said.

Shapiro’s death stunned the heavy metal and hard rock scene that grew out of the punk movement. The music agency he cofounded, Sound Talent Group, represented groups like Pierce The Veil, Parkway Drive, Sum 41 but also ventured into more pop acts like Hanson and Vanessa Carlton. Baker said Friday that the plane’s pilot and passengers were killed in the crash.

“There were no ground fatalities or serious injuries,” he said.

Also killed were Daniel Williams, a former drummer for the popular Ohio metalcore band The Devil Wears Prada, as well as two employees of Shapiro’s agency: Kendall Fortner, 24, and Emma Huke, 25.

A fifth passenger, 36-year-old Celina Marie Rose Kenyon, has also been identified by the coroner’s office in San Diego as one of the victims aboard the plane. Kenyon was not an employee of Sound Talent Group, a spokesperson for the agency confirmed Saturday.

The coroner’s office has not yet released information on the sixth victim.

The plane crash

The plane was headed from New Jersey to San Diego after a fueling stop in Kansas. It crashed about 2 miles (3 kilometers) from San Diego’s Montgomery-Gibbs Executive Airport. Eight people on the ground were hurt, none seriously.

The Cessna 550 Citation went down after hitting power lines, Baker said.

The pilot of the plane acknowledged to an air traffic controller that the weather was not ideal and debated diverting to a different airport, according to audio of the conversation posted by LiveATC.net.