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.

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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.