Aaron Snell, director of communications for the Idaho State Police, told Fox News Digital that he played down the significance of the late meeting and said investigators often worked long hours. “The DA was present as a resource,” he said. “We continue to work after hours. The DA has been here every day.” That included Thursday, which was Thanksgiving, when Latah County Prosecutor Bill Thompson returned to the police station around 2 p.m. and left about 10 minutes later. Idaho Murders: POLICE SHARE ‘STALKER THEME’ AS YOU ENTER 12TH DAY WITHOUT SUSPECTS Investigators looked inside the front door before moving deeper into the home. (Derek Shook for Fox News Digital) On Friday, he was inside with investigators, including several who had returned home earlier in the day, for about an hour. Late Friday afternoon, police and members of the FBI first looked outside and climbed the hill behind the house, which is built into a hillside and is three stories high. They then went downstairs again and were seen putting protective covers over their shoes and walking back into the house in King Road, which had been untouched for days. Idaho Murders: PROSECUTOR LOCATED AT THANKSGIVING POLICE HEADQUARTERS AS INTENSIFIED HUNTING FOR CAMPUS KILLER Latah County District Attorney Bill Thompson arrives at the Moscow Police Department on Thanksgiving Day. (Derek Shook for Fox News Digital, Inset: @KayleeGoncalves/Instagram) Kaylee Goncalves, 21; Madison Mogen, 21; Xana Kernodle, 20; and Ethan Chapin, 20, were found dead hours after police said someone attacked them in their sleep on Nov. 13. The three women were staying there and Chapin was visiting his girlfriend, Kernodle. Authorities said they found no signs of forced entry. Two of the victims slept on the second floor and two on the third. All four attended the University of Idaho. Ethan Chapin, 20, Xana Kernodle, 20, Madison Mogen, 21, and Kaylee Goncalves, 21, along with the other two roommates of the women in Kaylee Goncalves’ latest Instagram post, shared the day before the murders. (@kayleegoncalves/Instagram) Chapin was a member of the Sigma Chi fraternity, the University of Idaho said earlier this month. Kernodle and Mogen were both part of Pi Beta Phi sorority, and Goncalves belonged to Alpha Phi. “We worked over the holidays,” Snell told Fox News Digital in an interview at Moscow police headquarters on Friday. “This is an ongoing investigation and will continue to progress.” At the same time, the investigators were visiting the house again. Investigators can be seen through an upstairs window examining one of the bedrooms. (Derek Shook for Fox News Digital) They were seen searching an upstairs bedroom and looking right inside the front door downstairs. Two ground floor roommates and a pet dog were not injured in the attack. The home where four University of Idaho students were murdered on November 13th. This photo (Derek Shook for Fox News Digital) Idaho Murders: FOX NEWS’ Ted Williams Pushes Back ‘Peeping Tom’ Theory, ‘More Personal’ After searching the interior of the home, one of the investigators left with several small paper bags in hand. “Detectives are continuing to investigate and will gather evidence,” Snell told Fox News Digital. However, he added that he did not have details on what specifically authorities removed from the scene Friday afternoon. Fox News contributor and former Washington homicide detective Ted Williams said he believes police returned to the scene after determining the killer walked through the sliding glass door at the back of the home. “Remember the two surviving witnesses were sleeping on the first floor, so it’s highly unlikely that the killer or killers went through the front door,” he said. IDAHO COED KILLER: FBI PROFILE REVEALS SUSPECT’S POSSIBLE CHARACTERISTICS UNIVERSITY OF IDAHO STUDENTS MURDERED: TIMELINE OF EVENTS Snell said the researchers were seriously considering all possibilities to avoid tunnel vision. “The people working on this case from all three agencies are the best and the brightest and have the most informed resources,” he said. Investigators were considering all possibilities 12 days after the attack, according to authorities, who spent Thanksgiving analyzing evidence and conducting interviews. Most students have left town for the Thanksgiving break, but University of Idaho President Scott Green said all students will have the option to complete the semester remotely. Snell said if the suspect turns out to be a student who doesn’t intend to return, that won’t stop investigators. “We will continue this investigation no matter what,” he said. “That will put the various pieces together and ultimately find the suspect or suspects and then make that arrest.” Police have yet to identify a suspect or find the murder weapon – believed to be a fixed blade knife. All four victims had been stabbed to death, with some suffering defensive injuries, authorities said. “Whether that person is here on campus, in their room, online or anywhere in the community, we’re going to make that arrest,” Snell said. Investigators look into the back of the house where four University of Idaho students were stabbed in their sleep (Derek Shook for Fox News Digital) Police say they have already ruled out the two female roommates who were downstairs at the time of the murders, a man who was seen on surveillance video at a food truck at the same time as Goncalves and Mogen, just before they returned from a night out. exit. a “private party” driver who took them to the home, Goncalves’ ex-boyfriend and a group of friends who were present at the home Sunday morning when the initial 911 call was made. Members of the FBI’s Behavioral Analysis Unit were among investigators who returned to the Idaho crime scene where four college students were brutally stabbed. (Derek Shook for Fox News Digital) POLICE COULD MONITOR CLEON TOWERS NEAR UNIVERSITY OF IDAHO FOR CLUES IN STUDENT STABBING MYSTERY: EXPERT Police say they believe the attack was targeted and are asking the public for information and surveillance video. They are also looking into a claim that Goncalves may have had a stalker. Members of the FBI’s Behavioral Analysis Unit were among investigators who returned to the Idaho crime scene where four college students were brutally stabbed. (Derek Shook for Fox News Digital) Anyone with information about this matter is also asked to contact police — no matter how small the details. CLICK HERE TO GET THE FOX NEWS APP “We are continuing to look into the issue of stalkers and are asking for any information from the public on this issue,” Snell said. Anyone with information about the stalker or the case in general is asked to call the tip line at 208-883-7180 or email [email protected] Michael Ruiz is a reporter for Fox News Digital. Story tips can be sent to [email protected] and on Twitter: @mikerreports