Pennsylvania prosecutors Thursday dropped all assault charges against members of a now-closed Penn State fraternity in the hazing death of a pledge, sparing defendants the most serious allegations any had faced.

The state attorney general’s office said it will continue to pursue involuntary manslaughter charges against four former members of Beta Theta Pi in the February 2017 death of 19-year-old pledge Tim Piazza of Lebanon, New Jersey. But those misdemeanors do not carry the lengthy prison sentences that aggravated assault charges would have.

Local prosecutors had been handling the case, but a new county district attorney referred it to the state. The attorney general’s office informed a judge ahead of a hearing next week about the status of charges against 14 of the 26 men accused in the case.

“Our review is ongoing,” Democratic Attorney General Josh Shapiro said. “These charges represent one part of our investigation, and we will have further information to release as our review moves forward.”

A judge had thrown out the most serious charges September after a marathon preliminary hearing, but the county prosecutor at the time refiled them, including eight felony aggravated assault charges.

The notice of charges and amendments being filed Thursday said prosecutors still are pursuing a charges of hazing, reckless endangerment, conspiracy and alcohol law violations against 11 defendants due at the preliminary hearing next week.

It also noted no changes were being made to charges against three other defendants whose allegations previously had been sent to county court for trial. Also, all charges were dropped against the shuttered fraternity as a corporation.

The prosecutors’ decision means some defendants, including Michael Bonatucci, no longer face involuntary manslaughter charges, along with seeing the assault charges dropped.