CAIRO (AP) — A string of sexual assaults on women during celebrations of Egypt’s presidential inauguration — including a mass attack on a 19-year-old student who was stripped in Cairo’s Tahrir Square — prompted outrage Monday as a video emerged purportedly showing the teenager, bloodied and naked, surrounded by dozens of men.

Seven men were arrested in connection with the assault and police were investigating 27 other complaints of sexual harassment against women during Sunday’s rallies by tens of thousands of people celebrating Abdel-Fattah el-Sissi’s inauguration late into the night, security officials said.