The grieving sister of slain University of Idaho student Kaylee Goncalves has said that her sibling had no idea she was being stalked by “true evil” before she was brutally stabbed in an attack that sent shockwaves through the small college town of Moscow.

Alivea Goncalves spoke out for the first time since Idaho authorities released the arrest affidavit for suspected killer Bryan Kohberger, revealing chilling new details about the quadruple murder of Goncalves, Madison Mogen, Xana Kernodle and Ethan Chapin.

She said that the revelation that the 28-year-old criminology PhD student appears to have stalked the student home on King Road, Moscow, prior to the 13 November murders especially haunts her.

“We had no idea. She had no idea. I had no idea that true evil was genuinely watching them,” she told NewsNation.

The Independent’s Rachel Sharp has the full story:

Throughout the seven-week investigation into the murders, Bryan Kohberger continued with his studies at Washington State University and completed the first semester of his criminal justice PhD.

His classmates have now revealed that they noticed a change in behaviour from the suspect during that time, with the usually chatty student falling “completely silent” when the killings were discussed in class.

Ben Roberts, a WSU graduate student in criminal justice studies, told the Idaho Statesman that Mr Kohberger was usually very vocal in class and would often share his opinion and challenge his classmates on the topic of the criminal mind.

“He sat front and center, and was not hiding or tucking back in the back,” he said.

“He was right there in the middle of it.”

This all changed when the murders of four Idaho students was brought up in class one day.

At that point, Mr Kohberger fell “completely silent,” said Mr Roberts.

The four University of Idaho students murdered in an off-campus home in Moscow, Idaho, had no known connection to their suspected killer Bryan Kohberger, according to an attorney for one of the victim’s families.

“No one knew of this guy at all,” Shanon Gray, who represents the family of victim Kaylee Goncalves, told Business Insider.

His comments come as prosecutors in Idaho are yet to reveal a motive for the brutal quadruple murders or what connection – if any – they believe Mr Kohberger had to any of the victims.

The affidavit, released last week, revealed how cellphone data suggests that the suspect stalked the home of the victims at least 12 times between June and the night of the murders.

The grieving parents of one of the slain University of Idaho students have called for the death penalty for the man accused of stabbing her and her three friends to death in a brutal knife attack.

Kaylee Goncalves’ parents Steve and Kristi Goncalves spoke to NewsNation on Thursday night just hours after they came face to face with their daughter’s accused killer Bryan Kohberger for the first time in court in Idaho.

Mr Goncalves said that justice for his daughter would mean the death penalty for the 28-year-old criminology PhD student, saying that “he has to pay” for what he allegedly did to Goncalves, Madison Mogen, Xana Kernodle and Ethan Chapin.

Why did the surviving roommate wait eight hours to call 911 after seeing the killer?

Who was the intended target?

Is Bryan Kohberger the stalker Kaylee Goncalves complained about?

The Independent’s Rachel Sharp reports on the questions still unanswered in the case:

Students are returning to Moscow this week after the holidays for the start of the spring semester.

Classes will resume on Wednesday 11 January following the winter break.

Before Bryan Kohberger’s arrest, the university offered students the option of remote learning if they were afraid to return to campus.

Now that the suspect is behind bars, it remains to be seen if more students will return to in-person learning.