Hawaii joined a bipartisan coalition of states seeking documents and information from manufacturers and distributors of prescription opioids today.

The probe is part of a multi-state investigation into the nationwide opioid epidemic. A total of 41 state attorneys general are participating.

“Under Gov. David Ige’s leadership, my office and the state health department are determined to educate the public here and enforce laws to prevent the spread of opioid abuse in Hawaii,” state attorney general Douglas Chin said in a media advisory.

Opioids were involved in 33,091 deaths in 2015, including 169 in Hawaii, according to the Centers for Disease Control and Prevention. Investigative subpoenas were served to Endo, Janssen, Teva/Cephalon, Allergan and their related entitites, as well as Purdue Pharma.