A man in his 30s was found dead, lying upside down on Bronx train tracks between two subway cars early Tuesday, cops and sources said.

Cops descended on the 238th Street and Broadway No. 1 train station in Kingsbridge around 3:20 a.m. and found the unidentified man upside down, unconscious and unresponsive on the tracks, authorities and sources said. 

His body was discovered between two train cars, according to law enforcement sources.

No criminality was suspected in the death, cops said. 

It was not immediately clear how the man ended up on the tracks.