SAN LEANDRO -- A teenager who was struck and killed by an Amtrak train in San Leandro while apparently absorbed in a cell phone call was identified by the Alameda County coroner's office today as 16-year-old Daniel Segundo. Segundo, a San Leandro resident, walked around a lowered crossing gate and onto the tracks before being hit at 12:30 p.m. Wednesday by a northbound Capitol Corridor train at the Alvarado Street crossing, about 8 miles south of the Oakland station, authorities said. The circumstances of Segundo's death remain under investigation. None of the 20 passengers or crew aboard the train was...