A spokesman for the Illinois Department of Corrections says the lockdown at Illinois’ largest maximum security prison remains in effect following the discovery of a collection of crude weapons and homemade alcohol.

Tom Shaer says the lockdown at Menard Correctional Center won’t be lifted until an investigation is finished.

The prison has been on lockdown since Friday’s discovery. Authorities say there is no indication any weapons have been used recently at the prison or that inmates were drinking homemade liquor.