During the investigation authorities were able to find and arrest three of the students' alleged dealers, including accused cocaine dealers Roberto Lagares and Miron Sarzynski, who would also offer customers LSD and DMT, or dimethyltriptamine. Sarzynski's girlfriend, Megan Asper, was also arrested. Authorities say Asper "specialized in growing marijuana" out of the couple's apartment.
Students who witnessed the arrests told the student newspaper, The Columbia Spectator that the bust was so loud, it sounded "like an earthquake."
"It was very loud, very aggressive, the way it went down," Destiny Sullens, a Columbia student told the paper.
One student who belongs to a fraternity where some of the arrests were made told the paper, "I'm as good as I can be, knowing that my friends are going to prison."
The Associated Press contributed to this report