Authorities say nearly 100 students have been arrested at San Diego State University on drug-related charges.

Drugs, cash and guns were seized from sellers and buyers in the bust that followed a five-month undercover operation.

The San Diego County district attorney’s office says the 96 arrests include fraternity members. Defendants are scheduled to appear in state court to face charges Tuesday afternoon.

Early reports have indicated that many of those arrested belonged to the Theta Chi fraternity. It is believed they were heavily involved in possessing and distributing cocaine, ecstasy and other drugs.