The four University of Idaho students who became the targets of what police are now calling an "isolated, targeted" attack over the weekend were apparently stabbed to death, according to authorities.

Police in Moscow, Idaho, on Sunday initially responded to reports of an unconscious individual on King Road around noon and located the four deceased students upon arrival.

Their deaths have been ruled homicides, and while "no weapons have been located, based on preliminary information, investigators believe that an edged weapon such as a knife was used" in the attack, the Moscow Police Department said in a Tuesday morning statement. 

Police do not have any suspects in custody as of Tuesday.

UNIVERSITY OF IDAHO HOMICIDES: WHAT TO KNOW ABOUT THE 4 VICTIMS ALLEGEDLY KILLED NEAR CAMPUS

Flowers and stuffed animals are left at the entrance to the University of Idaho on Monday, November 14, 2022. Four students were killed over the weekend in an apparent quadruple homicide.  (Derek Shook for WHD News Digital)

The victims are Ethan Chapin, 20, of Conway, Washington; Madison Mogen, 21, of Coeur d'Alene, Idaho; Xana Kernodle, 20, of Avondale, Arizona; and Kaylee GonCalves, 21, of Rathdrum, Idaho.

IDAHO POLICE NAME 4 UNIVERSITY STUDENTS KILLED IN APPARENT QUADRUPLE HOMICIDE NEAR CAMPUS

The students' autopsies are scheduled to be completed later this week, at which point police will" hopefully provide more definitive information on the exact cause of the deaths," MPD said.

Police added that "based on information from the preliminary investigation, investigators believe this was an isolated, targeted attack and there is no imminent threat to the community at large."

FOUR UNIVERSITY OF IDAHO STUDENTS FOUND DEAD NEAR CAMPUS ‘BELIEVED TO BE VICTIMS OF HOMICIDE’

"Investigators are continuing to work diligently on establishing a timeline of relevant events to re-create the victims’ activities on the evening of November 12 and early morning of November 13, following all leads and identifying persons of interest," MPD said. 

The incident occurred at 1122 King Road in Moscow, which is located behind Greek Row and is known to have a large presence of student residents who host parties on weekends.

Investigators search a home in Moscow, Idaho on Monday, November 14, 2022 where four University of Idaho students were killed over the weekend in an apparent quadruple homicide. (Derek Shook for WHD News Digital)

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Investigators searched in and outside the home on King Road for evidence on Sunday and Monday.

Local authorities have partnered with state and federal law enforcement offices on the case and are asking anyone with information to contact the Moscow Police at 208-883-7054.