DUBLIN, Calif. -- A Northwestern University professor accused in the stabbing death of a Chicago man is a "gentle soul" and the allegations run contrary to how he's lived his life, the professor's lawyer said Monday before an initial court appearance in California, where he was arrested.

Kenneth H. Wine, an attorney for Wyndham Lathem, urged the public to withhold judgment until all of the facts come out.

"Since the beginning of this case, the defence has received dozens of calls and letters in support of Dr. Lathem, from friends and colleagues who have known him for decades," Wine said in a statement. "They all describe him in the same way -- a kind, intelligent, and gentle soul, and a loyal and trusted friend. What he is accused of is totally contrary to the way he has lived his entire life."

Lathem, a 42-year-old Northwestern microbiologist, and Andrew Warren, an Oxford University financial officer, surrendered to Bay Area authorities Friday night after more than a week on the run. They face preliminary charges of first-degree murder in Illinois in the July 27 killing of 26-year-old Trenton James Cornell-Duranleau in Lathem's Chicago apartment.

Lathem and Warren have not been formally charged. Lathem, who surrendered in Oakland, is being held without bail in Alameda County.

Warren, a British national, surrendered in San Francisco and does not have an initial court date yet.

Authorities have not disclosed a possible motive for the killing.