GLENDALE (WITI) -- FOX6 News is learning more about the murder of Peter Holzberger of Glendale. Two men are accused of killing a man and hiding his body, but it doesn't end there. The men are also accused of going back to the crime scene on multiple occasions.
When Glendale police searched the suspect's rooms, they found boxes, electronics and documents.
A search warrant reveals they all belonged to Holzberger.
25-year-old Nicholas Retzlaff and 28-year-old Robert Christophel rented rooms on the top floor of a home on W. Roberts in Milwaukee.
The men have now been charged in connection with the murder of 65-year-old Holzberger -- found dead inside his home, wrapped with bungee cords around his neck, hidden in a basement.
Friends had been looking for him for days.
"I called police and asked if they could do a wellness check and then they did and they couldn't find him and then it went on from there," Sally Stern said.
New documents reveal Retzlaff and Christophel went back to the Glendale home for four days after the murder.
A search warrant reveals they pilfered his home, taking valuables they either sold on the streets, gave to friends or hid inside the rooms they rented.
Police found dozens of items locked away, including more than 40 electrical devices, VCRs, stereos, cameras and speakers.
They also found CDs and DVDs and mail and receipts belonging to Holzberger.
Authorities say the two used Holzberger's debit card after his death.
Meanwhile, Holzberger's friends are trying to piece together why their friend was killed, and two men sit in jail awaiting their next court appearance.
"It's unrealistic to believe it's true. You try to keep him alive, that way, by thinking about how wonderful he was," Stern said.
Court records show Retzlaff and Holzberger had a connection before the homicide. Retzlaff's address had the same address as Holzberger as recently as 2005.