Update: Brother Says Doctors Spent Over an Hour Trying to Revive Michael Jackson, Hospital Releases Official Statement About the King of Pop's Death

Update: Brother Says Doctors Spent Over an Hour Trying to Revive Michael Jackson, Hospital Releases Official Statement About the King of Pop's Death
In the hours following Michael Jackson's death, more details have begun to emerge about the pop star's final moments.

"It is believed he suffered cardiac arrest in his home. However, the cause of his death is unknown until results of the autopsy are known," the Associated Press quotes his brother Jermaine as saying.

As previously reported, the King of Pop was rushed to UCLA Medical Center this afternoon (June 25). When paramedics arrived at his home, Jackson was not breathing and doctors were unable to later revive him. Jackson was pronounced dead at 2:26 PST.

Jermaine Jackson told reporters that both paramedics and Jackson's personal doctor attempted to resuscitate the singer at his L.A. home, and doctors spent over an hour trying to revive him at the hospital. Jermaine Jackson went on to praise the "heroic efforts" of all those who tried to revive his fallen brother.

The UCLA Medical Center has released the following statement concerning Jackson's death:

"The legendary King of Pop, Michael Jackson, passed away on Thursday, June 25, 2009, at 2:26 p.m. It is believed he suffered cardiac arrest in his home. However, the cause of his death is unknown until results of the autopsy are known. His personal physician, who was with him at the time, attempted to resuscitate Jackson, as did paramedics who transported him to Ronald Reagan UCLA Medical Center. Upon arriving at the hospital at approximately 1:14 p.m., a team of doctors, including emergency physicians and cardiologists, attempted to resuscitate him for a period of more than one hour but were unsuccessful. Jackson's family requests that the media respect their privacy during this tragic period of time."

According to the L.A. Times, the Los Angeles Police Department has opened an investigation into the death, though they stressed there was no evidence of criminal wrongdoing. Police plan to interview relatives, friends and Jackson's doctors, while the L.A. County coroner's office will determine the cause of death.

Jackson's autopsy will be conducted tomorrow by the coroner's office, TMZ reports.