After months of controversy over allegations of cancer-causing emissions, medical sterilization company Sterigenics says it will not reopen an Illinois plant.

The Illinois legislature is considering whether to restrict the use of a cancer-causing gas, currently in use by several Chicago-area facilities.

The Illinois Environmental Protection Agency is asking the Attorney General’s office to temporarily shut down a Chicago-area chemical plant. The agency says that plant is releasing an illegal amount of cancer-causing fumes into the air.