Porn star Sophia Leone’s cause of death revealed

Adult film actress Sophia Leone died of a fatal overdose… TMZ has learned.

Police in Albuquerque, NM tell us the late porn star’s official cause and manner of death is accidental OD… although it’s unclear what specific substances are involved.

As we first reported… police in New Mexico considered Sophia’s death “suspicious” and “unique” after she was found dead in her home on March 1.

During the investigation into the death – which at one point also involved a homicide detective – Sophia’s mother told police daughter drank heavily sometimes and was known to have suicidal thoughts.

Still, police say Sophia’s body showed no signs of trauma… as they have now officially classified her fatal strain as an accident.