LOS ANGELES (Reuters) - Pop star Michael Jackson (news), facing a trial on child molestation charges, is about to become a father to four more children -- quadruplets -- by way of a surrogate mother, Us Weekly magazine reported on Tuesday. Citing unnamed sources close to the self-proclaimed "King of Pop," the magazine said Jackson recently spent time with the pregnant mother-to-be in Florida, where he stayed in a $4,000-a-night luxury hotel suite in Miami Beach. The magazine said Jackson's spokeswoman Raymone Bain declined to confirm or deny the story, saying, "We do not respond to these kinds of stories." Bain could not be immediately reached for comment by Reuters. Jackson, 45, already has three children -- Prince Michael I and daughter Paris Michael by his former wife, Debbie Rowe, and Prince Michael II, the child he notoriously dangled from the balcony of a Berlin hotel in November 2002. Jackson later revealed in a television documentary that Prince Michael II had been born to a woman who was essentially a stranger to him. "I used a surrogate mother and my own sperm cells," he told British interviewer Martin Bashir. "She doesn't know me." It was in that same interview that Jackson ignited a public furor by saying he saw nothing wrong with having other children spend the night with him in the bedroom of his Neverland ranch home in California. One youth who appeared in that documentary is now at the center of the child molestation case pending against the performer. Jackson is charged in a 10-count indictment with committing lewd acts on a boy under the age of 14, as well as child abduction, extortion and false imprisonment. He has pleaded innocent, and a trial is set for Sept. 13.