Police will not say whether they have seen the video and will not release any details about the nature of their investigation.
News 12 has not verified the video and has decided not to show it.
The South Country School District canceled the remainder of the junior varsity boys lacrosse season. They say the incident in question involves the teams.
District officials will not say what happened or acknowledge whether they have seen the graphic video.
The source of the video says it has been circulating around the school.
Bellport High School contacted police on April 28 about the alleged incident. Parents say it took nearly a week for the district to tell them anything.