According to city attorney David Chiu, Walgreens Boots Alliance (NASDAQ:WBA) Inc. has settled with San Francisco for $230 million regarding its claimed contribution to that city’s opioid problem.

According to Chiu, the agreement came after a trial in which the court determined that Walgreens significantly aided the epidemic and caused a public nuisance.

Last August, U.S. District Judge Charles Breyer found that the pharmacy chain had neglected to investigate questionable opioid orders for over 15 years adequately.

After several drug manufacturers and distributors reached settlements with the city, Walgreens was the only defendant left on the case.

San Francisco later calculated that treating the opioid issue may cost $8.1 billion and declared Walgreens legally responsible for the full sum.

Walgreens did not immediately respond on Wednesday to a request for comment. It had previously denied liability.