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Chicago police reported that two people were found dead Saturday near O’Hare International Airport – only hours apart.

Both deceased people were found on West O’Hare Avenue.

The first decedent was an unidentified woman found on a Chicago Transit Authority (CTA) railcar at around 3:15 a.m.

Authorities believe the woman may have overdosed. She was pronounced dead at Resurrection Hospital.

Control tower at O'Hare

Control tower and Hilton Hotel O'Hare International Airport in Chicago, Illinois. (Andrew Woodley/Universal Images Group via Getty Images)

A 36-year-old man was discovered less than 12 hours later on West O’Hare Avenue.

The man was found unresponsive at around 12:30 p.m. He was taken to Resurrection Hospital, where he was pronounced dead.

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Chicago Transit Authority train

View of a Chicago Transit Authority (CTA) blue line train to O'Hare airport, Chicago, Illinois, July 6, 2015. (Photo by Gregory Potter/Interim Archives/Getty Images)

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Chicago Police Department told Fox News Digital that area detectives are investigating the incidents.