Investigators were seen inside the Moscow, Idaho home on Thursday where four University of Idaho students were killed earlier in the week.
The four students, Ethan Chapin, 20; Xana Kernodle, 20; Madison Mogen, 21; and Kaylee Goncalves, 21, were killed early Sunday between 3 and 4 a.m. inside a house on King Street, according to Moscow Mayor Art Bettge.
Moscow Police Department officers were responding to an unconscious person call at 11:58 am Sunday when they discovered the four students, who were pronounced dead at the scene.
In a press release on Tuesday, police said the suspect used a “sharp weapon like a knife” in the attack. Investigators believe the incident was “an isolated and targeted attack” with “no imminent threat to the wider community.”
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Idaho State Police investigators were seen at the home throughout the day Thursday, taking pictures and collecting evidence. A person in a hazmat suit could be seen while inside the home.
A spokesperson for the Federal Bureau of Investigation told Fox News Digital on Thursday that its Behavioral Analysis Unit is assisting local law enforcement officers in the case.
The unit performs “crime analysis, unknown offender profiling, investigative suggestions, threat assessments, interview strategies” and “critical incident analysis.”
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Latah County Coroner Cathy Mabbutt revealed in an autopsy report Thursday that the students were pronounced dead at noon Sunday, with the manner of death being a stabbing.
During a press conference on Wednesday, the head of the Moscow Police Department, James Fry, said he cannot say there is no threat to the wider community.
“We do not have a suspect at this time and we cannot say that there is not a threat to the community,” Fry said. “There’s a threat out there, possibly.”
“We have to watch out. We have to watch out for our neighbors,” Fry said.
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He added that two roommates were inside the house when the incident occurred, saying they were “uninjured.”
An Idaho State Police spokesperson told Fox News Digital that the two roommates are cooperating with the investigation.
Latah County Attorney Bill Thompson told NBC News Thursday that there may be more than one suspect.
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“It’s certainly possible. That’s the purpose of the investigation, which is why we’re really looking forward to any input from the public that can help investigators recreate everyone’s activities from Saturday night through early Sunday morning and hopefully to give them the clues, the information, to identify who did this,” Thompson said.
Shortly before they were killed, Mogen and Goncalves were seen at a local food truck in Moscow, Idaho via a Twitch stream before returning to their residence.
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Anyone with information about the incident is asked to call the Moscow police at 208-883-7054.
Rebecca Rosenberg and Audrey Conklin of Fox News contributed to this report.