Jay-Z is facing a copyright infringement lawsuit over his 2004 track �Justify My Thug�.

Publishers Bridgeport Music are accusing the rapper of using samples of music owned by themselves on the track � which featured on hit LP �The Black Album� � without their permission.

Although spokespersons for Jay-Z and the publishing house refused to comment, according to AllHipHop.com. Bridgeport have launched over 800 lawsuits in the last five years.