He suffered cardiac arrest and was not breathing when paramedics arrived.

LOS ANGELES -- Pop star Michael Jackson has been taken to UCLA Medical Center by ambulance suffering from cardiac arrest, fire officials confirm.

Los Angeles Fire Department Captain Steve Ruda said paramedics responded to a 911 call at Jackson's home around 12:26 p.m. He was not breathing when they arrived. The paramedics performed CPR and took him to UCLA Medical Center, Ruda says.

Jackson is renting a home in the Holmby Hills in the 100 block of Carolwood Drive off Sunset Boulevard. It is about two minutes from the UCLA Medical Center.

Family members have been called and are on their way to UCLA, sources say.

UCLA officials are not releasing any details about the pop star's condition.