Stars drop out of MJ tribute concert

LOS ANGELES, Sept. 10 (UPI) -- Chris Brown, Mary J. Blige and Natalie Cole will not be performing as previously announced at the Michael Jackson tribute concert in Vienna, sources told TMZ.

Jackson died June 25 at the age of 50. The circumstances of his death, which has been ruled a homicide, are still under investigation.

Jermaine Jackson, Michael's brother and a co-producer of the event, announced this week at a press conference that Brown, Blige and Cole, among others, would be part of the lineup for the Sept. 26 concert.

Although their photos are still on the event's Web site, TMZ said Thursday the three recording artists have no intention of taking part of the concert.

The report did not indicate why Jackson said they would be.