Denver - When the Twin Towers fell in Manhattan on Sept. 11, 2001, Chad Milosevich responded.
The young man, who worked for a government contractor, spent four months sifting through debris at Ground Zero.
Ten years later, he died of lung cancer.
Last month, Milosevich’s sister drove by his house in Green Valley Ranch and was stunned to find someone living inside.
Investigators tell 7NEWS that Alfonso Alvarez Carrillo broke into Milosevich’s house, squatted there for some time, and then accepted a cash down payment from a couple who then moved in.
On June 19, Carrillo was charged with second-degree burglary, theft, and criminal trespass.
Prosecutors say Carrillo allegedly took control of the home at 20304 E. 47th Place shortly after Milosevich died in March 2011. Carrillo has a background in real estate and according to a past indictment, targets homes that are vacant or under foreclosure.
When 7NEWS went to Milosevich's home, a man answering the door claimed he didn’t know anything. Neighbors said that man, his wife and their child have been living in the house for months.
Court documents indicate that the couple paid Carrillo approximately $5,000 to move in and were told they’d receive notification from the bank about future payments.
7NEWS tried to contact Carrillo at the place he listed as his home in Thornton.
A woman answering the door said Carrillo and his wife used to live in the house but it didn't belong to them.
“They were actually squatting here,” Kelleen Trostel said. “When I purchased the house (legally) they tried to have me evicted.”
Trostel said the Carrillo’s even went so far as to claim they were military veterans, so they couldn’t be thrown out of the house.
“They know the laws very well,” Trostel said. “They know what people are allowed to do and not do. Fortunately for me, my dad is in this business. He knows the law better than them.”
7NEWS tried to contact the Carrillos at their office, America's Home Retention Services, in Lakewood. There was a note on the front door which said they were “out for training.”
Last year, a grand jury indicted the Carrillos and an associate on 25 counts of forgery, theft and racketeering for trying to sell or rent property that didn’t belong to them.
Carrillo was accused of filing phony deeds on houses vacated through foreclosure, then gaining access and posing as the owner. The charges allege he took thousands of dollars in payments from unsuspecting potential home buyers -- many who are primarily Spanish-speaking and undocumented -- and then giving them fraudulent deeds to properties. The actual property owners were unaware the property had been "sold."
The Carrillos are due in court on those charges on July 8.
Prosecutors say the charges in connection with Milosevich’s house are separate from the racketeering charges.