Tolbert, 34, and alleged prostitutes Angel Weston, 21, and Stephenie Foulke, 22, were officially charged yesterday with murder, conspiracy, robbery, abuse of a corpse and related offenses.
All three were arraigned and held without bail, the District Attorney's Office said. They are scheduled to appear at the Criminal Justice Center for a preliminary hearing Sept. 25.
Investigators, meanwhile, continued their search for portions of Zarzycki's remains - and the hatchet or ax that Tolbert allegedly used to carve up his body.
A boater found Zarzycki's butchered torso Tuesday morning inside a bag floating in the Schuylkill, authorities said. His head, arms and legs had not been found as of last night.
"We're still hoping to find them," said Homicide Lt. Mark Deegan, whose squad in the Special Investigations Unit is handling the gruesome case.
Deegan said investigators believe that Zarzycki had been to the apartment, on 11th Street above Locust in Center City, at least once before, but might have met the prostitutes at other locations as well after contacting them on the website backpage.com.
It's unknown why Zarzycki was targeted for robbery during their final encounter, or how much money he had with him.
His family reported him missing last week, and detectives ultimately traced him through computer and phone records to the 11th Street apartment.
Tolbert, Weston and Foulke were arrested on prostitution-related offenses last Saturday during a sting operation involving Citywide Vice Unit cops.
"The bottom line is that they planned to rob him, and it just went bad, really bad," Deegan said. "I just wonder how [dismemberment] became the end result. How is that ever an option?"
Zarzycki was the son of a retired Philly police officer. His family could not be reached for comment. News reports said he had struggled with a drug problem at some point.
Deegan said investigators believe that Tolbert and the alleged hookers might have intended to let Zarzycki go if the robbery hadn't taken a fatal turn.
Homicide Capt. James Clark said earlier this week that Zarzycki suffocated during the struggle, and that Tolbert allegedly dismembered Zarzycki by himself in the apartment's bathtub.
Crime Scene Unit officers on Thursday night removed portions of pipes that were connected to the tub.
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