The Ph.D. student charged with murdering four University of Idaho undergraduates displayed such troubling behavior in the weeks around the killings that his university investigated his conduct around women, counseled him over a verbal altercation with a professor and ultimately fired him from his job as a teaching assistant, according to interviews and a university record.

Less than two weeks before the killings in November, the Ph.D. student, Bryan Kohberger, was called to a meeting with faculty members to discuss growing concerns about his behavior, according to the record, a timeline the university prepared in justifying its decision to terminate him. The meeting was part of a series of discussions over Mr. Kohberger’s conduct during his criminology studies at Washington State University, which lies about seven miles west of the University of Idaho.

The faculty’s concerns with Mr. Kohberger grew in the weeks after the Nov. 13 killings, though he had not yet been identified as a suspect. They culminated in the criminal justice department’s unusual decision to terminate Mr. Kohberger from his teaching assistant role in December, shortly before his arrest, according to three people familiar with his time at the university and a formal letter to Mr. Kohberger informing him that he had failed to meet the conditions required to maintain his funding under the program.