Jury selection has been halted in Minnesota’s $5 billion case against 3M Co., on the day the trial was expected to start.

Minnesota sued 3M in 2010, alleging the company damaged natural resources and contaminated groundwater by disposing chemicals.

Trial was set to begin Tuesday. Instead, the Star Tribune reports Minnesota Attorney General Lori Swanson and 3M are expected to make an announcement Tuesday afternoon, which could indicate a settlement in the case.

Attorneys for all parties and a spokeswoman for 3M did not immediately return phone messages to The Associated Press.

The case focuses on the company’s disposal of chemicals once used to make Scotchgard fabric protector and other products. The company denies it did anything wrong, insisting it was acting legally at the time.