(JTA) – A Southern California school district is reopening its investigation into an incident in which students made a Nazi salute and sang a Nazi marching song at the start of an awards ceremony. The Garden Grove Unified School District and officials at the Pacifica High School said in a statement that the district and the school have “received new information, allegations, and claims that have led us to reopen and widen the scope of the investigation.” The incident, which took place last year, involved 10 members of the boys’ water polo team. The video was posted to Instagram by one of the athletes. Part of the new information includes new videos of additional instances of students making Nazi gestures and marching with a German flag, and displaying a Confederate flag, the local ABC affiliate KABC reported. Two of the videos are from last year and one from three years ago.

In a statement, Pacifica High administrators claim they first learned of the initial video in March, four months after the incident occurred, and its investigation led to “disparate accounts and lacked details that have since emerged.” The Pacifica High administration “realizes it did not respond to the incident with the gravity it deserved,” according to the statement. The school district said that its plans for action include forming a task force to address school-based hate, and working with community partners to implement anti-bias campaigns on school campuses. The Anti-Defamation League and The Simon Wiesenthal Center Museum of Tolerance will be among those partners.

“Rest assured that any students engaging in hate speech or activities will face disciplinary action in accordance with California Education Code,” the statement also said, calling the incident “a crisis for our community.”

Dozens of angry parents and teachers at a regularly scheduled school district board meeting on Aug. 20 called for clarifications on the incident and the response.

According to JNS, Rep. Alan Lowenthal (D-Calif.) condemned on Wednesday, Aug. 21 the group involved in the incident. Pacifica High School is part of his district. “This disturbing incident saddens me greatly,” Lowenthal, who is Jewish, told JNS. “We as a community must face uncomfortable facts, and ask hard questions about hatred and ignorance in our midst. I can only hope that this can become a teaching moment – not just for the students who participated, but for the entire student body on the horrors of the Holocaust and the evils of the Third Reich.”

The Los Angeles Museum of the Holocaust has invited the students at the awards ceremony to tour the museum and interact with Holocaust survivors. 

California Sen. Dianne Feinstein, who is also Jewish, and Sen. Kamala Harris, both Democrats, did not respond to a request by JNS for comment.