Mourners light candles and lay wreaths in memory of Italian student Giulio Regeni in front of the Italian embassy in Cairo, Egypt, Saturday, Feb. 6, 2016 (AP)
A mourner grieves at a candlelight vigil in memory of Italian student Giulio Regeni in front of the Italian embassy in Cairo, Egypt, Saturday, Feb. 6, 2016 (AP)
An Egyptian policeman stands guard during a candlelight vigil for Italian student Giulio Regeni in front of the Italian embassy in Cairo, Egypt, Saturday, Feb. 6, 2016 (AP)
An Egyptian policeman speaks on his mobile phone as mourners gather at a candlelight vigil for Italian student Giulio Regeni, in front of the Italian embassy in Cairo, Egypt, Saturday, Feb. 6, 2016 (AP)
A mourner distributes flowers at a vigil for Italian student Giulio Regeni in front of the Italian embassy in Cairo, Egypt, Saturday, Feb. 6, 2016 (AP)
A mourner holds flowers at a vigil for Italian student Giulio Regeni in front of the Italian embassy in Cairo, Egypt, Saturday, Feb. 6, 2016 (AP)
Activists and Italian nationals living in Egypt take part in a rally in memory of Italian student Giulio Regeni on February 6, 2016, outside of the Italian embassy in Cairo (AFP)
Activists and Italian nationals living in Egypt take part in a rally in memory of Italian student Giulio Regeni on February 6, 2016, outside of the Italian embassy in Cairo (AFP)
Activists and Italian nationals living in Egypt take part in a rally in memory of Italian student Giulio Regeni on February 6, 2016, outside of the Italian embassy in Cairo (AFP)
Egyptian policemen watch as mourners gather at a candlelight vigil for Italian student Giulio Regeni in front of the Italian embassy in Cairo, Egypt, Saturday, Feb. 6, 2016 (AP)
Mourners light candles and lay wreaths in memory of Italian student Giulio Regeni in front of the Italian embassy in Cairo, Egypt, Saturday, Feb. 6, 2016 (AP)