A 28-year-old man died Saturday morning when his vehicle crashed into a tree in Sorrento Valley, officials said. Officers with the San Diego Police Department responded around 5:40 a.m. Saturday to a report of a vehicle on fire and a person down in the street on Mira Mesa Boulevard near Flanders Dri ve, according to Officer Dave O’Brien. When officers arrived, they found a 2009 BMW 3-series sedan that had been speeding eastbound had crashed into a tree and the driver had been ejected, police said. “For an unknown reason the BMW swerved left onto the center median and collided with a tree,” O’Brien said. Police said the driver died at the scene. The SDPD Traffic Division was handling the investigation and DUI was suspected to be a factor in the collision, police said. Mira Mesa Boulevard was closed in both directions between Flanders Drive and Genetic Center Drive while officers investigated. The driver’s name was not released. No other injuries were reported. ...read more read less