Prominent music agent Dave Shapiro is among those who were killed after a small plane crashed into a residential street in San Diego, according to his talent agency.
Mr Shapiro was the co-founder of Sound Talent Group, whose clients include rock bands like Sum 41, Story of the Year and Pierce the Veil.
Daniel Williams, former drummer for the band The Devil Wears Prada, is also feared to have been involved in the crash. Media reports indicate he posted on social media from the plane.
Federal officials say there were six people on board the plane and all are presumed dead. The crash destroyed one home and damaged 10 others in the Murphy Canyon neighbourhood, leaving charred cars and fiery debris.
The company said it lost "three employees in the plane crash" including Shapiro. It did not identify the others.
San Diego authorities confirmed at least two people were killed in the crash, though the National Transportation Safety Board - which is investigating the incident - said the total death toll is still unclear. Authorities have not released the names of any of those killed.
The plane, a Cessna 550 aircraft, veered into the neighbourhood but such planes can carry up to 10 people, including a pilot, according to the Federal Aviation Administration. Six were on board at the time of the crash.
The crash caused about 100 people to be evacuated from the neighbourhood, which is just northeast of the city of San Diego.
Eight people on the ground were injured, including one who was hospitalized and others treated at the scene.
The aircraft appeared to be heading to Montgomery Field, an airport located 10km (six miles) north of downtown San Diego
