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Police: Chicago stabbing death suspects surrender peacefully

FILE - This undated file photo released by the Chicago Police Department shows Wyndham Lathem, an associate professor of microbiology and immunology at Northwestern University. Lathem and Andrew Warren, an employee of the University of Oxford in Britain, both wanted in the fatal stabbing of a Chicago man have been taken into custody in Oakland, California, a Chicago police spokesman said Friday, Aug. 4, 2017  (Chicago Police Department via AP)
FILE - This undated file photo released by the Chicago Police Department shows Wyndham Lathem, an associate professor of microbiology and immunology at Northwestern University. Lathem and Andrew Warren, an employee of the University of Oxford in Britain, both wanted in the fatal stabbing of a Chicago man have been taken into custody in Oakland, California, a Chicago police spokesman said Friday, Aug. 4, 2017 (Chicago Police Department via AP) FILE - This undated file photo released by the Chicago Police Department shows Wyndham Lathem, an associate professor of microbiology and immunology at Northwestern University. Lathem and Andrew Warren, an employee of the University of Oxford in Britain, both wanted in the fatal stabbing of a Chicago man have been taken into custody in Oakland, California, a Chicago police spokesman said Friday, Aug. 4, 2017 (Chicago Police Department via AP)

CHICAGO (AP) – A Northwestern University professor and a University of Oxford employee wanted in the brutal stabbing death of a Chicago man surrendered peacefully in California and will be returned to Chicago for interrogation, federal and local authorities said.

Wyndham Lathem, 42, gave himself up late Friday at the Oakland federal building and Andrew Warren, 56, surrendered at about the same time to the San Francisco Police Department, according to Michael McCloud, fugitive taskforce commander with the U.S. Marshals Service.

McCloud said the surrender of the two suspects was “negotiated,” although he declined to say how that happened.

“We were not in contact with them directly,” during the negotiations, he said.

Lathem, an associate microbiology professor at Northwestern, was booked into the Alameda County jail. Warren, a Somerville College resident at Oxford University in England, was taken to the San Francisco County Jail. They will appear separately in court before being extradited to Illinois. It was not immediately clear when that would happen.