Today is a very, very sad day. On the heels of Farrah Fawcett‘s passing, news has surfaced that Michael Jackson has also died. He was only 50 years old. The legendary pop star suffered cardiac arrest earlier this afternoon at his home in Holmby Hills. A 911 call was made from his residence at 12:21pm pacific time. When paramedics arrived on the scene, Michael is said to have stopped breathing, with no visible pulse. After not being able to revive him, he was then was rushed to UCLA Medical Center and was said to have slipped into a coma for a short while before being pronounced dead around 3:15pm pacific time. The L.A. Times confirmed his death.

Jackson had been due to start a series of comeback concerts in London on July 13 running until March 2010. The singer, whose hits included “Thriller” and “Billie Jean,” had been rehearsing lately in Los Angeles for the past few months. A spokespersons for Jackson so far could not be reached for comment. Michael is survived by three children, Michael Joseph Jackson, Jr., Paris Michael Katherine Jackson and Prince “Blanket” Michael Jackson II.

What a very sad week in Hollywood, indeed. First Ed McMahon, then Farrah Fawcett, and now Michael Jackson. Our thoughts, prayers, and hearts go out to the family and friends.