A 21-year-old man died after crashing his off-road dirt bike near a Foothill Ranch neighborhood Wednesday afternoon, authorities said.
Police responded to the accident scene at Rue de Fortuna and Cabriole shortly after noon and found Foothill Ranch man Bryan Joseph Marquez with major injuries.
Marquez had not been wearing a helmet at the time of the crash, police said.
Members of the sheriff's Major Accident Reconstruction Team were on scene Wednesday afternoon, along with volunteers with the Trauma Intervention Program to comfort witnesses to the fatal crash, according to authorities.
Police closed off Rue de Fortuna to through traffic at Fascia Place for hours Wednesday as the accident reconstruction team conducted its investigation.
Although the cause of the crash is under investigation, deputies said skid marks in the roadway may indicate speed played a role in the fatal accident.
