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As the investigation into the quadruple killing involving university students enters its third week in Moscow, Idaho, police are having to deal with an influx of callers who are worried for their safety.
Forensic psychologist Kris Mohandie believes that because of the brutality of the murders and the victims' appearance as popular students on school, law enforcement should closely examine the possibility that the suspect is an "incel."
Incel is defined as a misogynistic subculture of emotionally dissatisfied males who typically vent their rage online about not being able to find a partner.
"There's a lot of hatred and anger that is evidenced in these crimes – the level of violence, the resolve, the obvious hostility in such a personal hands-on attack," Mohandie told Fox News Digital.
"That is a lot of intensity. So it is not inconsistent with somebody that may have that kind of motivation. There's something hateful and rage filled about it."
Since the founding of the murders of four University of Idaho students on November 13, the Moscow Police Department has received an increase in calls from people reporting "unusual circumstances" or asking for welfare checks on loved ones.
"We understand there is a sense of fear within our community," police said.
The four students were discovered dead on Nov. 13 in a rental home close to the school; the perpetrator has not been identified.
The University of Idaho will hold candlelight vigils on November 30 at 5 p.m. to honor the four students' lives.