A group of 120 Kentucky counties, along with various cities and the state, tomorrow plan to file a class-action lawsuit against Purdue Pharma and its parent for its marketing of the OxyContin painkiller, a highly addictive and controversial med that became known as Hillbilly Heroin.

This appears to be the first time that a group of local governments have banned together to go after the drugmaker. And the move follows a recent settlement in which Purdue Pharma and three present and former execs agreed to pay $634.5 million to settle federal felony charges related to deceiving docs about the potential for abusing OxyContin.

“This is an important event, not just for the residents of Pike County, but all Kentuckians whose lives have been torn apart from the effects of this powerful and highly addictive narcotic,” says Pike County executive and judge Wayne Rutherford, in a statement. “This company has to be held responsible for their wrongdoing. This suit is not about money, but rather the people who have been affected and seen first-hand the devastation this drug has wrought on Kentucky.”

A county spokesman says the complaint seeks unspecified reimbursement for prescription costs incurred by consumers and for Kentucky state and local governments, as well as punitive damages. Pike County has hired Gary Johnson to pursue the lawsuit.