Ethan Chapin and Xana Kernodle: Police unable to explain FIVE-HOUR gap in tragic pair's movements

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Investigators determined that Chapin and Kernodle were last seen at a party at the Sigma Chi fraternity house on the University of Idaho Campus at 735 Nez Perce Drive at around 9 pm local time. At approximately 1.45 am, the couple is believed to have returned to the residence at 1122 King Road. NewsNation's Brian Entin reported that the frat house where they partied is walking distance from the home and would not take more than 15 minutes to reach. Furthermore, there is no reported information from any Sigma Chi members who may have been at the party and seen Chapin and Kernodle. 

"We do want to figure out what occurred between 9 pm and 1.45 am, who [Chapin and Kernodle] were with, and what was going on with them," Moscow police told Entin. "Maybe any routes or passes they took to go home. Those types of things, potentially, are critical to the investigation." Authorities are hoping that as students come back to campus, they will be able to help with more information about the duo's whereabouts. "We want to talk to those people. That's important for us," the police said.

The murdered students were reportedly found on the second and third floor of the residence, while the two roommates living on the ground floor — Funke and Mortensen — were spared. Authorities are trying to determine why they were spared and whether they slept through the attacks. Investigators said that each of the victims was stabbed multiple times and that the attacker used a "fixed-blade knife" to carry out the bloodbath. However, police are yet to identify a suspect as of Tuesday night, November 29.

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While authorities are trying to find out who is responsible, they have ruled out a number of potential suspects -- including Goncalves’ ex-boyfriend Jack DeCoeur, the man seen behind Goncalves and Mogen at the food truck, the person who drove the girls home, surviving roommates Mortensen and Funke, as well as the friends called to the house by the surviving roommates on the morning of November 13. While law enforcement officials believe the attack was "targeted," they have asked the Moscow community to remain vigilant. Meanwhile, University of Idaho administrators have ramped up security around campus for the remainder of the semester.