The events that led to an arrest in the Idaho student slayings [Video]

The killings of four University of Idaho students in mid-November at an off-campus residence stunned the small community of Moscow, where investigators grappled with what the town’s police chief would later describe as a “very complex” case.

No suspect was immediately named in the deaths of housemates Madison Mogen, 21, Kaylee Goncalves, 21, and Xana Kernodle, 20, as well as Kernodle’s boyfriend, Ethan Chapin, 20. Nor was a murder weapon, believed to be a large fixed-blade knife, found.

But the intense scrutiny on the unsolved slayings sparked thousands of tips to the FBI.

Then, nearly seven weeks later — with the community on edge and speculation swirling about who could commit such violence — police announced an arrest in Pennsylvania of a doctoral student in criminal justice.

“This is not the end of this investigation,” Latah County Prosecuting Attorney Bill Thompson said at a news conference announcing the arrest in late December. “In fact, this is a new beginning.”