EXCLUSIVE: Tila Tequila Believes Fiance Casey Johnson Died From Drugs

Tila Tequilla believes fiance Casey Johnson died from a prescription drug overdose, a source close to the situation told RadarOnline.com exclusively.

BREAKING NEWS: Casey Johnson Passes Away

Johnson was known to indulge heavily in prescription drugs, the source said. The source also said Tila’s first reaction after hearing the shocking news of Casey’s death was that it was a drug overdose.

Tila Tequila Twitters About Casey Johnson’s Death

Tila had tried to reach out to Johnson on December 29 but the heiress’ phone was shut off.

Even in her grief, Tila suspects that Casey’s indulgence in prescription drugs was the cause of her untimely demise.