Casey Johnson, the heiress to the Johnson & Johnson fortune who recently made headlines with a reported engagement to reality star Tila Tequila, has died at age 30. Authorities arrived at her LA home at 11:51 a.m. Monday and she was pronounced dead at the scene. A police spokesperson said it appeared to be a natural death, but that the coroner would run a toxicology report. Tila immediately took to her Twitter page, and claimed at one point that Casey was “in a coma.” Casey’s antics and fights with ex-girlfriends have attracted a lot of attention in the last few years and Tila said the two had recently had a spat. After claiming that she was going to be offline and begging for her privacy, Tila then continued to post constant Tweets commenting throughout the day.