The New York attorney general’s office said on Friday that it had tracked about $1 billion in wire transfers by the Sackler family, including through Swiss bank accounts, suggesting that the family tried to shield wealth as it faced a raft of litigation over its role in the opioid crisis.

Earlier this week, thousands of municipal governments and nearly two dozen states tentatively reached a settlement with the Sackler family and the company it owns, Purdue Pharma, maker of OxyContin. It was unclear if the new disclosure would change the thinking of any of the parties that agreed to the settlement.

The attorneys general of a majority of states, including New York and Massachusetts, have already balked at the proposed deal, contending that the Sackler family has siphoned off company profits that should be used to pay for the billions of dollars in damage caused by opioids.

The wire transfers are part of a lawsuit against Purdue and individual Sacklers in New York. Letitia James, now the state’s attorney general, had issued subpoenas last month to 33 financial institutions and investment advisers with ties to the Sacklers in an effort to trace the full measure of the family’s wealth.