Paris Hilton's weekend Malibu bash turned into an all-out brawl.
The Calabasas/Malibu Sheriff's Department tells ET that the 33-year-old socialite's brother got into an altercation with another party guest around 2 a.m. on Sunday morning, July 13. Both parties declined an investigation and prosecution, so no arrests were made and no report was generated.
According to police, Paris was not involved in the incident.
Hilton's 24-year-old brother Barron Hilton II Instagrammed from Malibu on Saturday, July 12, posting a pic of him and a friend, writing: "Miss this guy."
After rumors started circulating as to what actually happened at Paris' party, the Simple Life star tweeted on Sunday night: "Untrue Rumors online. This man barged into my home uninvited & put 2 of my friends in the hospital when he was told to leave. Was so scary."