The Johnson and Johnson heiress, Casey Johnson, was found dead on Monday in her Los Angeles home.
According to reports from TMZ, quoting a law enforcement source, the star appears to have been dead for several days before her body was discovered.
Johnson, 30, the daughter of Woody Johnson was recently engaged to reality-TV star Tila Tequila.
Tequila told TMZ Monday evening that the two had fought last week and that she was unable to reach Johnson as her phone was turned off.
Johnson's father is the owner of the New York Jets.