Campus personnel found swastikas at Nassau Community College on four occasions since October, the most recent occasion this past Wednesday.

The other swastikas were found three times in October.

"In all of these instances, an unknown individual took a black or a blue magic marker and displayed swastikas between 3 inches and 5 inches in diameter," says Nassau Detective Lt. Richard LeBrun. "This is not a practical joke. We take it very seriously."

The news comes less than a week after a swastika was found scrawled alongside hateful white nationalist rhetoric on a sidewalk in Mineola. Detectives don't believe there is a connection though, and police say bias-related crimes are actually down in Nassau. There have been 49 this year, and there were 62 bias-related incidents in 2015.

However, some civil rights leaders say it still feels like hate is on the rise.

"If you want to really solve a problem, you've got to admit the problem," says the Rev. William Watson. "Nassau County brags about how great they are, we must understand, even if you were that great, you could be better."

Some students are wondering why they are only hearing about the October incidents now, saying they should have been alerted at the time. News 12 Long Island reached out to officials from the college, but they did not offer an explanation as to why the college didn't send an email to students alerting them of this. Meanwhile, police say detectives didn't release the information earlier for fear of jeopardizing their investigation.