A former Bridgewater councilman who was convicted in a cold case murder and then later saw that conviction overturned and the charges dismissed has now filed a lawsuit against three investigators who were involved in the case.Attorneys for Gregory Hopkins announced the lawsuit early Wednesday morning.Hopkins was convicted in 2013 in the 1979 death of Catherine Walsh, a woman who was found dead inside her Monaca apartment.During his trial, Hopkins admitted to having an affair with Walsh but denied any involvement in her death.Pennsylvania’s Superior Court overturned the conviction in 2020 and earlier this year the charges against Hopkins were dismissed.In the lawsuit, Hopkins alleges Andrew Gall, an investigator who worked for the Monaca Police Department and is with the Beaver County Detective Bureau as well as two state police investigators, Rocco Demaiolo and Ashlee Mangan, all intentionally charged him despite knowing he did not commit the crimes he’s accused of.Pittsburgh’s Action News 4 has reached out to state police, as well as to Gall, for their response to the lawsuit. On Wednesday morning, a state police spokesperson said PSP does not comment on pending litigation.