On Friday, authorities charged a second suspect in the murder of four Pennsylvania men after three drug deals left one of the murderers feeling wronged.

Pennsylvania police took Cosmo DiNardo and Sean Kratz, both 20 years old, into custody, charging them with conspiracy, robbery, and murder, among other things, USA Today reported.

The news came a day after DiNardo's attorney announced his client confessed — in exchange for prosecutors' promise not to seek the death penalty — to partaking in the murders of 21-year-old Tom Meo, 22-year-old Mark Sturgis, 19-year-old Jimi Patrick, and 19-year-old Dean Finocchiaro.

Attorney Paul Lang refused to say whether DiNardo killed the young men, who disappeared last week. Patrick was the first to disappear and attended the same high school as DiNardo.

Investigators found human remains, including a body identified as one of the victims, on DiNardo's parents' property. Finocchiaro was found in a 12-foot grave on the property, where three of the victims' bodies were burned.