<sod >Mr CruzÂ is alleged to have shot dead 14 pupils and three staff members at Parkland's Marjory Stoneman Douglas High School in the deadliest high school shooting in US history.< eod>< sod > The teenager is alleged to have shot dead 14 pupils and three staff members at Parkland's Marjory Stoneman Douglas High School on 14 February in the deadliest high school shooting in US history.< eod>