Three more Greek houses at Indiana University Bloomington are having to halt all activities.

The university’s website says fraternities Sigma Phi Epsilon, Lambda Sigma Upsilon and sorority Omega Phi Beta have been issued “cease and desist” orders.

IU spokesperson Chuck Carney, says they were given the orders for violating public health regulations and restrictions, and the incidents are being investigated. Details about the incidents haven’t been released.

Seven Greek houses are on quarantine. Thirty were under quarantine orders on Sept. 2.