Two weeks after police found four murdered University of Idaho students, this is how the investigation goes

New details in the Idaho stabbing investigation 2:28

(CNN) --

Two weeks after the stabbing deaths of four University of Idaho students, dozens of local, state and federal investigators are still working to determine who carried out the brutal attack.

After analyzing more than 1,000 leads and conducting at least 150 interviews, investigators have yet to identify a suspect or uncover a murder weapon, believed to be a fixed-blade knife.

The four students: Ethan Chapin, 20;

Kaylee Goncalves, 21;

Xana Kernodle, 20;

and Madison Mogen, 21, were found stabbed to death on November 13 at an off-campus home in Moscow, Idaho.

The killings have unsettled the campus community and the town of about 25,000, which has not seen a murder since 2015.

Police believe the attack was targeting them earlier.

Authorities said they have not ruled out the possibility that more than one person was involved in the deaths.

• Inside the investigation into who killed 4 college students in Moscow, Idaho

On the night of the crimes, Goncalves and Mogen were at a sports bar, and Chapin and Kernodle were seen at a frat party.

Two roommates were at the home when police were called to the residence around noon the next day, though investigators do not believe they were involved in the deaths.

More than 260 digital submissions, which may include photos and videos, have been submitted by the public to an FBI tip form, the Moscow Police Department said in a statement Friday.

The department asks for leads or videos of the places the victims went that night, even if there is no perceptible movement or content on them.

“Detectives are also seeking additional tips and surveillance video of any unusual behavior on the night of November 12 through the early morning of November 13 while Kaylee and Madison were in downtown Moscow and while Ethan and Xana were in the house. of Sigma Chi," the statement said.

Idaho Gov. Brad Little has committed up to $1 million in state emergency funds to help with the ongoing investigation, Idaho State Police Col. Kedrick Wills said during a news conference earlier this month. week.

Here's what we know about the investigation.

Extensive evidence collected at the location

So far, using evidence collected at the scene and the collection of tips and interviews, investigators have been able to put together a rough timeline and map of the group's final hours.

Investigators believe all four victims had returned to the home at 2 am the night of the stabbings.

Two surviving roommates had also been out in Moscow that night, police said, and returned to the house at 1 a.m.

Police previously said Goncalves and Mogen returned to the home at 1:45 a.m., but updated the timeline Friday and said digital evidence showed the couple returned at 1:56 a.m. after visiting a food truck and being driven home by a "private party."

Investigators have released a map showing the movements of four University of Idaho students the night they were killed.

(Credit: Moscow Police Department)

The next morning, the surviving roommates "called friends at the residence because they believed one of the victims on the second floor had passed out and was not waking up," police said in a statement.

Someone called 911 from the house at 11:58 a.m. using the phone of one of the surviving roommates.

"The call reported an unconscious person," Moscow police Capt. Roger Lanier said Wednesday.

"During that call, the dispatcher spoke to several people who were on the scene."

When the police arrived, they found two victims on the second floor and two victims on the third floor.

There were no signs of forced entry or damage, police said.

• What we know and don't know about the murders of 4 University of Idaho students, which still doesn't have a suspect

A coroner determined that all four victims were stabbed multiple times and were likely asleep when the attacks began.

Some of the students had injuries from defending themselves, according to the Latah County coroner.

At least 113 pieces of physical evidence were collected, around 4,000 crime scene photos were taken and several 3D scans of the home were made, according to police.

Detectives also collected the contents of three dumpsters on the street in case they had any evidence.

In an effort to locate the murder weapon, investigators contacted local businesses to determine if a fixed blade knife had been purchased.

Police respond to wave of rumors

As weeks go by without an identified suspect or significant progress in the case, a flurry of rumors has surfaced about the murders.

Moscow police addressed the issue in a press release on Friday and attempted to quash some of the rumours.

“There is speculation, without factual support, stoking community fears and spreading false facts.

We encourage referencing official releases for accurate information and up-to-date progress,” the statement read.

Several people have been ruled out as suspects for now, the police department said, including:

• The two surviving roommates

• Other people in the house when they called 911

• The person who brought Goncalves and Mogen home

• A man seen on surveillance video of a food truck visited by Goncalves and Mogen

• A man whom Goncalves and Mogen called "numerous times" in the hours before his death

Police also said reports that the victims were bound or gagged are inaccurate and stressed that the identity of the 911 caller has not been released.

Tina Burnside, Theresa Waldrop, Eric Levenson and CNN's Paradise Afshar contributed to this report.

Crime University of Idaho