What happened: Surveillance footage appears to show NYU student Amelia Lewis being followed, struck from behind, grabbed by the hair and thrown to the ground while walking on Broadway.
Response: A friend obtained the video and Lewis gave it to NYU security, which forwarded it to police; NYU says it is assisting detectives and offering the student support.
Latest: The NYPD says a person of interest is in custody. Lewis has warned other students to stay alert while walking in the city.

















