After experiencing chest pain, Randy Jackson, younger brother of late pop icon [artist id="1102"]Michael Jackson[/artist], was hospitalized in Southern California on Tuesday.

According to The Associated Press, Jackson, 48 -- not to be confused with the "American Idol" judge of the same name -- began having chest pain around noon on Tuesday and was rushed to Pasadena's Huntington Memorial Hospital, where he is awaiting test results.

An unnamed source close to the Jackson family said doctors believe Jackson suffered a mild heart attack, but the hospital's staff has declined to comment on the producer/singer's condition so far.

TMZ reported Wednesday (June 16) that Jackson was extra careful to take immediate care of the chest pains because he reportedly suffered a previous heart attack at an undisclosed time.

An unnamed assistant of Jackson's confirmed to E! Online that the singer had suffered a mild heart attack Tuesday and said he is "doing as well as expected."

Jackson, the second youngest of the nine Jackson siblings (just ahead of Janet), joined the family band in 1975 when the group was rechristened "The Jacksons" and helped co-write its most successful late-period hit with Michael, "Shake Your Body (Down to the Ground)." He did not participate in the family's 2009 A&E reality show, "The Jacksons: A Family Dynasty."

The health scare came just a day after Jackson joined several other family members in a Los Angeles courtroom to hear a judge rule on whether Dr. Conrad Murray, the physician [article id="1631505"]charged with involuntary manslaughter[/article] in the death of Michael, would lose his license to practice medicine in California; Murray ended up keeping his license.

Jackson spoke to CNN last week and said he thought Murray -- who administered what the Los Angeles County coroner has determined a lethal dose of the surgical anesthetic propofol and other sedatives to Jackson -- should be charged with first-degree murder. Next Friday marks the one-year anniversary of Michael Jackson's death.

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