American professor, Oxford employee arrested over brutal United States killing

Wyndham Lathem, an associate professor at Northwestern University, and Andrew Warren, a senior treasury adviser at Somerville College, of the University of Oxford, turned themselves in to authorities in California Friday night. Their arrests were confirmed by Chief Chicago police spokesman Anthony Guglielmi, who said that the pair had been taken into custody "without incident".

Lathem surrendered at the federal courthouse in Oakland U.S. Marshals Service supervisory inspector Ed Farrell, told the Chicago Tribune.

Mr Conroy said the the men will appear in separate courts in the coming days to face extradition hearings to Chicago where they will face detectives.

Cornell-Duranleau - who had a certification in cosmetology and moved to Chicago in 2016 - was found with multiple stab wounds in Lathem's 10th-floor apartment in Chicago at around 8.30pm (3.30am BST) on 27 July.

Earlier on Friday, police said that Lathem allegedly had sent a video message to family and friends in which he apologized for his part in the killing.

Lathem has been a professor of microbiology-immunology at Northwestern's Chicago campus since 2007.

Guglielmi said Warren and Lathem were caught on CCTV leaving the building that night.

"I've never seen where suspects in a homicide would make a donation in the victim's name", said Lake Geneva police Lt. Edward Gritzner.

"Whatever the circumstances, we would urge him to contact the USA authorities as soon as possible, in the best interests of everyone concerned".

Police said there is no surveillance video of the encounter at the library and were at a loss to explain the donation. Police have not said why the suspects were in California and have not released details on what led up to the murder.

They were alerted to the murder by an employee at the front desk, who received an anonymous tip about a crime committed in Lathem's residence in the upscale River North neighborhood.

A manhunt had been underway since shortly after the body of Cornell-Duranleau was found riddled with stab wounds on July 27.

While there, one of them made a $1,000 (£766) cash donation to the public library there in Cornell-Duranleau's name.

  • Rogelio Becker