The Sackler family, owners of Purdue Pharma, have been accused by Delaware Attorney General Kathy Jennings of adding fuel to the fire of the national opioid epidemic through deceptive marketing.

The lawsuit, filed in Delaware Superior Court on Monday, alleges that, through their controlling stake in Purdue and their involvement in company operations, the Sackler family members directed a two-decade-long pattern of aggressive sales and misleading marketing campaigns.