Jay-Z's record label is considering taking legal action against the person responsible for leaking the rapper's forthcoming single on the internet last week. Highly-anticipated comeback track "Show Me What You Got" appeared illegally online on Friday.

And bosses at Def Jam have launched an internal investigation following the incident to try and find the person or persons who leaked the track.

A source tells website AllHipHop.com, "The FBI may do an investigation into this. Everything has been under lock and key, so we have no idea how the single was leaked."

"Show Me What You Got" is on the new Jay-Z album Kingdom Come, which is set for release on November 21.

(This news article provided by World Entertainment News Network)