A 26-year-old man who was found dead with nearly two dozen stab wounds in a torched Queens penthouse may have planned the explosion as part of an elaborate suicide plot, police sources said Wednesday.

Anesti Bulgaresti, who had been out of work for two months and was mulling a return to his home country of Greece, was suffering from depression, chronic headaches and vertigo, according to sources.

Bulgaresti, who lived in the top-floor apartment on 41st Avenue near 73rd Street with his brother, was found dead Tuesday morning after a massive explosion blew the roof off the Jackson Heights building.

Cops initially believed the four-alarm blaze was set to cover his killer’s tracks once it was discovered Bulgaresti had been stabbed more than 20 times.

The cause of the inferno is still under investigation.

But police sources now say the fatal wounds may have been self-inflicted after a city medical examiner inspected his body.

The exam revealed no other trauma or defensive wounds, and a knife was found under Bulgaresti’s body, which was discovered in the bathtub, sources said.

Cops are still probing the details of the man’s death as they await further autopsy results.