The Northwestern University professor and Oxford University employee wanted in connection with the brutal murder of a hair stylist in Chicago have been captured in California.
Wyndham Lathem, 42, surrendered at a federal courthouse in Oakland and Andrew Warren, 56, was arrested in San Francisco late on Friday, nine days after the horrifying slaying.
They were apprehended more than 2,000 miles away from the lavish Windy City apartment where they allegedly stabbed and mutilated Trenton Cornell-Duranleau.
Chief Chicago police spokesman Anthony Guglielmi told the Chicago Tribune they were taken into custody 'without incident'. They will now be transported back to Chicago to be interrogated by detectives.
'Both individuals will be held accountable for their actions and we hope today's arrest brings some comfort for the victim's family,' Guglielmi said in a statement.
'We are also thankful that this did not end in further tragedy.'
Cornell-Duranleau was found dead in a luxury Chicago apartment block about 8.30pm on July 27 after police received a mysterious call from an unidentified man telling them 'there may have been a crime committed in Room 1004' of the Near North Side high-rise.
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Wyndham Lathem, 42, (left) and Andrew Warren, 56, (right) were taken into custody in California late on Friday, 2,100 miles away from the Windy City apartment where they allegedly stabbed and mutilated Trenton Cornell-Duranleau
Cornell-Duranleau was found dead in a luxury Chicago apartment block about 8.30pm on July 27 after police received a mysterious call from an unidentified man telling them 'there may have been a crime committed in Room 1004' of the Near North Side high-rise
Officers got into the apartment using a master key. Once inside, they followed a trail of blood into the bathroom where the 26-year-old was lying face down, with stab wounds to his back.
Police found a knife with a broken blade in the trash can and another knife near the sink.
A source told the Chicago Sun Times: 'The victim was savagely killed. The crime scene was covered in blood.
'The body was mutilated. His genitals were cut, mutilated. It was so savage it broke the knife found at the crime scene.'
Police believe Cornell-Duranleau was killed in Lathem's apartment in the 500 block of North State Street around 5am.
But officers were not alerted until an anonymous caller reached the front desk of the building around 8.30pm, more than 15 hours later, the Tribune reported.
Chicago police on Friday revealed that Lathem sent a 'video message' apologizing to his loved ones and describing the killing as 'the biggest mistake of my life.'
Investigators say they have spoken to several people who have received the video from Lathem in the wake of the murder.
Police spokesman Anthony Guglielmi would not go into the specific contents of the video, only saying that Lathem apologized in the video for his involvement in the slaying and called it 'the biggest mistake of my life.'
It also emerged on Friday that the two suspects drove to Wisconsin after the killing and made a $1,000 donation to a library in the dead man's name before his body was found inside Lathem's apartment.
Lake Geneva, Wisconsin, police Lt. Ed Grittzner says a person handed a library worker $1,000 in cash.
Warren, a former bus driver and train buff who works in payroll at Oxford's Somerville College in the UK, is believed to have been just days into his first trip to the US when the murder took place.
Lathem is an associate professor of microbiology at Northwestern, where he is an expert in immunizing against bubonic plague.
Reports claim two knives were found in the apartment on the 10th floor of the Grand Plaza Apartments, where Lathem resides. One was near the sink, and another with a broken handle was in a trashcan
Cornell-Duranleau, a native of Michigan, worked as a hair stylist and loved video games, cars and cartoons, according to his obituary shared on Facebook by his mother.
Cornell-Duranleau and Lathem were friends on Facebook, although it's not clear when and how the two had first crossed paths.
Andrew Warren is a British national who had once worked as a bus driver and cashier - he is on his first trip to the United States
His mother, Charlotte Cornell, released a statement on Wednesday morning the family does not know Warren or Lathem.
Cornell's statement said: 'Our Family is deeply saddened by the death of our son. It is our hope that the person or persons responsible for his death are brought to justice.
'We are asking that you allow our family to process and grieve this tragedy privately.
'We are asking all media outlets to not contact our family, friends or associates. When we have had sufficient time to morn our child's passing, we will release a more in depth statement if we believe it is appropriate to do so.
'She declined to say whether she or other family members had ever heard of them before her son was killed because the two suspects 'are at large and there's an ongoing investigation.'
She said she hoped her written statement would provide some relief for relatives who have been inundated with calls from reporters around the world.
Cornell-Duranleau, a native of Michigan, worked as a hair stylist and loved video games, cars and cartoons, according to his obituary shared on Facebook by his mother