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Rapper Nas has filed a legal bid to prevent his estranged wife Kelis from receiving spousal support payments.

The former hip-hop supercouple has been embroiled in a bitter divorce since April (09), just three months before the birth of their son Knight.

In July (09), Nas was ordered to pay a whopping $55,000 (£34,375)-a-week in spousal and child support by a New York judge, but now the star is trying to knock down the payments, so that he only provides for his newborn son.

He filed papers on Monday (02Nov09) in a bid to block the spousal support payments he owes to the "Milkshake" hitmaker, according to TMZ.com.

The website also claims Nas is seeking joint custody of his baby son.