A total of five missing women have now been linked to the sprawling and ongoing investigation centered on a home in Philadelphia's Olney neighborhood.
Nicole Fusaro, who was 27 when she disappeared in 2018, is among them, a cousin told Action News on Tuesday.
That cousin, Jonathan Halloran-Koren, added that family members have been meeting with Philadelphia police detectives.
"Nicole was a beautiful, kindhearted woman who deserved so much better than what happened to her. She will forever be loved and missed by her family and friends," Halloran-Koren said.
Meanwhile, sources tell Action News the FBI has increased the number of agents assigned to the investigation to help authenticate more than one million images that have been recovered from the home.
Philadelphia police say an update to the case could come as soon as this week, Commissioner Kevin Bethel said. No date or time for a news conference has been set.
The investigation centers on 44-year-old Eugene Horsch, whose home in the 400 block of W. Chew Avenue has been under scrutiny since June.
The other missing women connected to this case include Gabrielle Amarando, who disappeared in 2012 at age 22, and Maribel Fresses, who disappeared in 2018 at age 27.
Police said last month the women were seen in and videos recovered during the investigation, and both appeared to be dead.
Their bodies have not been recovered.
Blair Tonzelli, who was 35 years old when she went missing in 2023, was the first woman named in this case.
Police say when Horsch was arrested, he was with a woman in possession of an identification card with Tonzelli's name on it. The woman allegedly told police Horsch gave her the ID.
Amy McHale was 44 years old when she was last seen in 2016. Shortly after news broke of Horsch's arrest, her family told Action she was last seen at the W. Chew Avenue house.
McHale had previously been married to Horsch's late father, Raymond, who has also become a central figure in this case.
Sources told Action News last week that investigators have recovered video that allegedly shows Raymond Horsch strangling a woman to death.
That woman has not been named.
Eugene Horsch remains in federal custody on firearms charges.
The investigation began June 19 after a federal park ranger noticed a black BMW that was parked in an area it was not supposed to be in the 600 block of Market Street on Independence Mall around 8 p.m.
Multiple law enforcement agencies are conducting an investigation after chemicals, ammunition and drugs were found inside a home in Olney.
A ranger suspected drug activity and asked the two for identification. That's when the woman allegedly handed over the ID with Tonzelli's name on it.
Authorities say they have since recovered chemicals, drugs, firearms and ballistic evidence from the property, along with a 55-gallon drum connected to water lines.
Investigators have also excavated an underground pipe from in front of the W. Chew Avenue home. Police said in July the pipes would be tested for evidence, but officials declined to provide additional details due to the ongoing investigation.
Pipes excavated at Olney home at center of federal investigation
Documents obtained by Action News indicate officers found a handwritten note referencing serial killer Ted Bundy and methods for disposing of trash. The note was unsigned.
Eugene Horsch was indicted in early July for being a convicted felon in possession of guns, including one with an obliterated serial number, as well as being in possession of fake DEA and FBI credentials.