Michael Jackson arrived at a Los Angeles hospital by ambulance. According to reports, Jackson went into cardiac arrest. Paramedics in the ambulance administered CPR, TMZ reported Thursday afternoon. 

The call to 911 came in at 12:21 pm Thursday, from Jackson's Holmby Hills home located in Los Angeles.

At 4:30, TMZ reported that he was picked up from his house approximately 20 minutes before. Jackson's mother is also reported to be on her way to be with him.