BOISE, Idaho (KBOI) - For the first time, we are hearing more about what motivated Adam Dees to brutally murder three people in the Boise Foothills earlier this year.Detectives with the Ada County Sheriff's Office say they conducted an interview on Monday with the 22-year-old Nampa man about the night of the killings.
Dees killed Ted and Elaine Welp along with their son Tom in their home on Cartwright Road on March 8.
Dees was sentenced to life in prison without the possibility of parole last Friday after pleading guilty to three counts of first degree murder in June.
The interview, or debriefing, was part of Dees' plea agreement with Ada County Prosecutors.
Detectives say Dees told them in the interview that he was depressed, suicidal, and didn't see his life going anywhere, so he decided to "just go rob a house... that'll give me money to play with for a while."
Detectives say Dees used Google Maps to find high-end homes around Boise and Mountain Home that were in remote areas.
Dees told them he didn't know the Welp family before that night, and that he picked their home on Cartwright Road because it was isolated and looked like the family there had money.
The sheriff's office says Dees told them he parked his car near Cartwright Road on March 8 before hiking down a hillside so he could stake out the Welp's home, before heading back to Nampa to wait for it to get dark.
Later that night, detectives say Dees told them he returned wearing black clothes and armed with guns and knives.
Dees told detectives that he broke into a second house being built on the property and stole some power tools before making his way to the main house.
Dees then found an open door into the garage and hid inside, according to detectives. He then said he found some house keys in a truck in the garage, which gave him access to the house.
Investigators say Dees told them he noticed the house had a security system but that it was turned off. He told detectives that he would have left the house immediately if the system had been turned on.
Dees also said he would also have left the house if the family had a bigger dog.
In the interview, detectives say Dees told them this was his first home invasion, but that if he got away with it he might try to do more in the future.
According to the sheriff's office, Dees told them he's addicted to violent first-person shooter video games, and that the murders weren't difficult for him because he'd done so much killing in those video games.
The sheriff's office says they promised to release more information about this case back in March and now the public has some answers.
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