Upon landing at the airport, the passenger, identified as Yury Rubel, was declared dead. The Wayne County Medical Examiner’s Office said the passenger died of natural causes. Rubel was suffering from hypertensive cardiovascular disease, which caused his death. The age and place of origin of the passenger were not immediately revealed, Detroit Free Press reported.

The Delta flight 583 took off from Detroit Metropolitan Airport for Shanghai around 4:25 p.m. EDT and the medical team pronounced him dead around at 7:15 p.m. EDT.After a “medical emergency was declared,” a Delta spokesperson said the flight decided to divert the plane back to the airport.

“The aircraft landed without incident and the passenger in question was removed,” the spokesperson said.

Airport spokeswoman Lisa Gass said Airport Authority’s Public Safety team responded to the airline’s request of medical assistance on the plane. Authorities determined that the passenger already died when the team arrived onboard.

A passenger on a Delta Airlines flight from Detroit, Michigan, to Shanghai, China, was unresponsive. 

Flight 583 was rescheduled and took off at 8:20 a.m. EDT on Tuesday.