A 20-year-old man was found dead at a vocational school in East Harlem on Friday, cops said.

Lakee Butler, 20, of Queens, was discovered unconscious inside the School of Cooperative Technical Education on East 96th Street and 1st Avenue at around 2 p.m., according to police.

He was taken to Metropolitan Hospital, where he died.

A police source said the man may have suffered a cardiac episode.

The city medical examiner’s office will determine the exact cause of death.