MOSCOW, Idaho — More than 100 investigators, officers and support staff have responded to about 600 tips since the killing last week of four University of Idaho students, officials said Sunday.
As the tips poured in, each was processed, checked and cleared, according to the Moscow Police Department, which has five support staff dedicated to the case.
“Thirty-eight interviews were conducted with people who may have information about the killings,” the department said in a Sunday briefing update.
Investigators released timelines detailing the whereabouts of the victims and other students who lived in the off-campus house. No arrests were made by the authorities.
MORE: University of Idaho sister murder victim reveals new details as hunt for suspect continues
Investigators said they also performed autopsies and searched for surveillance videos. They asked for advice from anyone “who observed suspicious behavior”.
“Currently, no suspects are in custody and no weapons have been located,” investigators said.
The victims who were found dead Nov. 13 have been identified as 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.
ABC News contributor and former FBI agent Brad Garrett told “Good Morning America” Monday that the killer or killers may have known the layout of the house.
“It tells me that someone came into the house with a level of comfort — that they probably knew their way around the house,” Garrett said.
SEE ALSO: A timeline of the murders of 4 University of Idaho students
The Moscow Police Department said it assigned four detectives, 24 patrol officers and five members of its support staff to the investigation. They have been joined by a wave of outside investigators, who have taken over Moscow, a university town of around 25,000, since the murders were first uncovered last Sunday.
The FBI sent 22 investigators to Moscow, according to local police. 20 other agents were working the case but were in Treasure Valley, Idaho; Salt Lake City, Utah; and West Virginia. Two members of an FBI behavior analysis unit were also working on the case, police said.
Investigators also said a 911 call originated from inside the residence and was placed on one of the surviving roommates’ cell phones. They first told authorities someone had passed out and would not wake up, officials said.
“Several people spoke with the 911 dispatcher before a Moscow police officer arrived on the scene,” officials said. “Officers entered the residence and found the four victims on the second and third floors.”
Garrett said investigators should expand their search outside of the victims’ immediate circle of friends and family.
“You’re going to have to start expanding to people they’ve only had a casual relationship with,” he said.
ABC News’ Emily Shapiro, Melissa Gaffney, Marilyn Heck, Izzy Alvarez and Flor Tolentino contributed to this report.
Copyright © 2022 ABC News Internet Ventures.
fbq(‘set’, ‘autoConfig’, false, ‘443456229787972’);