<sod >Police have said a man - believed to have been the shooter who sparked a massive security operation at the YouTube headquarters - was found dead from what appeared to be a self-inflicted wound.< eod>< sod > Police have said a woman Ã¢ÂÂ believed to have been the shooter who sparked a massive security operation at the YouTube headquarters Ã¢ÂÂ was found dead from what appeared to be a self-inflicted gunshot wound.< eod>