Santa Clara police are conducting an active investigation into a physical altercation that broke out in the parking lot of Levi's Stadium on Sunday. The incident occurred after the San Francisco 49ers defeated the Las Vegas Raiders, and it gained significant attention after a video of the brawl was shared on social media platforms.

The circulating footage, which has not been independently verified by The Standard, depicts a chaotic scene involving multiple individuals. In the graphic clip, one man is shown being knocked unconscious by another. A second participant then intervenes, striking the initial aggressor and knocking him out as the melee spreads to others nearby. The video appears to show two fans lying unconscious on the ground.

According to department records, law enforcement arrested a total of eleven people at the stadium between 10:57 a.m. and 5:30 p.m. on Sunday. The group consisted of nine men and two women, with ages ranging from 28 to 51. The charges varied, but seven of the individuals were booked on suspicion of alcohol-related disorderly conduct.

In addition to the disorderly conduct charges, four men were arrested on suspicion of fighting in a public place. One of these four individuals also faced an additional charge for the possession of a controlled substance. A police lieutenant stationed at the stadium command post noted that officers responded to several different fights during the event, as reported by NBC Bay Area.

Lt. Eric Lagergren of the Santa Clara Police Department confirmed the department's awareness of the viral video in a statement provided to the San Francisco Chronicle. He described the incident as part of an ongoing investigation and indicated that more details would be released as they become available. The police department has asked witnesses to contact them at 408-615-4700 or to leave anonymous tips at 408-615-4847.

The 49ers organization addressed the incidents in a statement released on Monday afternoon. A team spokesperson emphasized a zero-tolerance policy for violence at Levi's Stadium. The statement highlighted the swift response of the Santa Clara Police Department, along with security and guest services teams, who handled several incidents throughout the game. The team expressed gratitude to all personnel for their dedication to maintaining a safe environment for fans.

The rivalry between the 49ers and the Raiders has a history of spilling into physical conflicts. In 2023, two people were stabbed in a fight involving fans from both teams at an In-N-Out restaurant in Santa Clara following a preseason game. Another notable incident occurred in 2018, when a game at Levi's Stadium resulted in 32 arrests, primarily for public intoxication.

The intensity of this rivalry dates back even further. In 2011, the teams suspended their annual preseason matchup after two men were shot in a parking lot at Candlestick Park and another was beaten. These past events underscore the long-standing history of fan conflict associated with the matchup.

Requests for comment from the city of Santa Clara, the local police and fire departments, and a spokesperson for the Santa Clara County Sheriff's Office were not immediately answered by The Standard. The investigation into Sunday's specific brawl remains open as authorities continue to gather evidence and review surveillance footage.