NEW YORK (CBSNewYork) — A man was found dead on a subway train in the Bronx Tuesday afternoon.

Police said at 4:22 p.m. Tuesday, they received a 911 call of an unconscious man inside a No. 5 Train station at the Dyre Avenue terminal in Eastchester, police said.

READ MORE: Rangers Stay Red Hot, Get 4 Points From Panarin In Rout Of Blackhawks

Officers found the 65-year-old man slumped over a seat, sources said.

READ MORE: NYC Hospitality Alliance: Mayor De Blasio 'Grinch' For Vaccine Mandate That May Keep Tourists With Young Children Away

The New York City Medical Examiner’s office will determine the cause of the man’s death, but source said the preliminary indication is that it was natural. It was not known late Tuesday whether the man was homeless.

MORE NEWS: Hate Crimes Spike Citywide, New NYPD Data Reveals

The man’s identity was being withheld pending family notification late Tuesday.