Campus police received an anonymous tip about a fraternity's alleged actions. The tip was related to a reported rape, which had been announced to students the previous day. According to the tip, Chi Phi fraternity was seeking to keep the alleged incident quiet.

The tip was received by Cornell police, who had alerted students about the reported rape. Further details about the incident and the tip are available from the source.

The source provides more information about the reported rape and the anonymous tip received by campus police. For more details, readers can refer to the source.