SAN FRANCISCO—Authorities have identified two men killed at a San Francisco warehouse after large slabs of rock fell on them.

The Medical Examiner's office said Sunday that the victims were 46-year-old Hector Vazquez of Oakland and 53-year-old Philip Marich of San Francisco.

Fire Department officials said 10 slabs of rock fell on the men as they were being unloaded from a truck at Galaxy Granite Inc., a stone fabricator in the city's Bernal Heights neighborhood.

The California Division of Occupational Safety and Health was investigating the accident.