United States authorities have arrested a university professor and another man accused in the stabbing death of a Chicago hairstylist after a nationwide manhunt.
Following a US-wide manhunt for the two men, Briton Andrew Warren, 56, handed himself in almost 3,200 kilometres away in San Francisco while Wyndham Lathem, 42, gave himself up in Oakland.
Andrew Warren was arrested after he "safely surrendered" himself around 6:30 p.m.to San Francisco police, authorities said.
"Both individuals will be held accountable for their actions, and we hope today's arrest brings some small level of closure and justice for the victim's family", Chicago Police Department spokesman Anthony Guglielmi said.
Both men - taken into custody without incident - will appear before an Oakland court and are now awaiting extradition to IL, where they will be questioned by Chicago homicide detectives.
Guglielmi said investigators don't know exactly why the suspects picked the library in Lake Geneva, about 85 miles northwest of Chicago, to make the donation - neither the victim nor the suspects had any known connection to the library.
Warren surrendered himself in San Francisco, and Lathem in Oakland.
Prof Lathem is a medical researcher and associate professor at Northwestern University's downtown Chicago campus.
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The two men are suspected in the July 27 murder of Trenton Cornell-Duranleau, 26.
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Chicago police had earlier identified the victim as Trenton Cornell, but have since said his full name was Trenton Cornell Duranleau.
Before the men were taken into custody Friday, Chicago police said Lathem sent out a video to family and friends, apologizing for his role in the stabbing. "We are also thankful that this did not end in further tragedy". Lathem is scheduled to be arraigned Monday morning.
"Cornell-Duranleau, who suffered multiple lacerations, was pronounced dead at the scene".
Late last night, officers said that they had an "idea" where Mr Warren and Mr Lathem are hiding and believe they are "armed and dangerous".
"This is now a criminal matter under investigation by the appropriate authorities, and Northwestern University is cooperating in that investigation", according to the statement.