Police in Chicago have launched a manhunt for a microbiologist with an interest in the bubonic plague after finding the body of a 26-year-old man.
Warrants were issued on Monday for Wyndham Lathem, a microbiology professor at Northwestern University who specialises in studying the plague, and Andrew Warren, a senior treasury assistant at Somerville College, Oxford.
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His body was reportedly found by a maintenance worker at Lathem's home on the tenth floor of an upscale apartment block.
Warren is believed to have been days into his first trip to the US when the murder took place, says the Daily Mail.
According to the arrest warrant, the two men allegedly "stabbed [Cornell-Duranleau] multiple times thereby causing the death".
The Chicago Sun-Times says police are investigating "a variety of motives including a possible domestic incident".
Anthony Guglielmi, chief communications officer for Chicago Police, tweeted photos of the two men with a plea to turn themselves in:
A statement from Oxford University said it was "not aware of this case, which is clearly extremely concerning", reports the Chicago Tribune.
Police added that Warren and Lathem have probably fled Chicago and warned that both men were considered armed and dangerous.