Pair held in Butler County called ‘persons of interest’ in slashing death

Pittsburgh Post-Gazette

The Butler County district attorney said it may be some time before anyone is charged in the brutal slashing murder of a Kittanning man, but he said two people who may be connected to the slaying aren’t going anywhere.

Two “persons of interest” in the death of 55-year-old Gregory Bosko are being held in the Butler County Prison on probation detainers, said District Attorney Rich Goldinger. He identified them as Tiffany Hilliard, 30, of Butler, and Joshua Greaves, 34, of Mercer. They were taken into custody Saturday following a traffic stop.

“We use the term ‘person of interest,’ but I think it’s safe to call them suspects,” Mr. Goldinger acknowledged Thursday.

No homicide charges have been filed.

Mr. Bosko, who most recently had resided in Kittanning but had spent most of his life in Butler County, according to his family, went missing on March 20. Ms. Hilliard and Mr. Greaves had been living with Mr. Bosko at least on and off in the weeks prior to Mr. Bosko’s disappearance. Their most recent residence of record was an apartment above a diner in Butler. That building went up in flames on March 26.

“We think they were going back and forth between Butler and Kittanning and they were getting rides from Mr. Bosko,” Mr. Goldinger said.

On Saturday, police stopped Mr. Bosko’s car and found the car was registered to him but he was not in the vehicle. Two of the people in the vehicle — Ms. Hilliard and Mr. Greaves — were taken into custody on outstanding bench warrants for probation violations. There may have been two other people in the vehicle. One has come forward and