Members of the Sackler family who own Purdue Pharma LP and grew wealthy from sales of OxyContin agreed to give back $6 billion to settle lawsuits accusing them of helping fuel the opioid epidemic, earning the unanimous support of state attorney generals to resolve their liability and end the company’s bankruptcy case.

Members of the billionaire Sackler family and their company, Purdue Pharma, have reached a deal with a group of states that had long resisted the company’s bankruptcy plan, opening the way for billions of dollars to begin flowing to addiction treatment programs nationwide, according to a court filing Thursday.

If Judge Robert Drain, who has presided over the bankruptcy proceedings in White Plains, N.Y., approves the agreement, the Sacklers will pay as much as $6 billion to help communities address the damages wrought by the opioid crisis.

Purdue Pharma and its owners, the billionaire Sackler family, will pay $6 billion to several states to settle a lawsuit brought about by the devastating opioid crisis, according to court papers.

A New York State judge must now sign off on the deal between the maker of OxyContin and the states.

According to the terms of the deal, the Sacklers, whose cumulative net worth is estimated to be $13 billion, will pay at least $5.5 billion in cash, which will be used to fund treatment centers helping those addicted to opioids.