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R. Kelly's ex-wife, Andrea Kelly, says the R&B star is behind on his child support payments.  

According to the "New York Post's" "Page Six," Andrea filed court papers last week accusing R. Kelly of falling behind on his $20,000 per month child support payments.  

Last year, he was accused of failing to pay over $100,000 in child support.  He later settled the debt. 

Kelly could be in more trouble if he doesn't appear at a March 27th child-custody hearing in Chicago.  Because Kelly didn't show up at a November hearing, sources tell the "Post" that the singer's lawyer is worried that another failure to appear could result in a warrant for his arrest.   

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