Rap mogul Sean 'Diddy' Combs reportedly disciplined a member of his staff after they stole Pharrell Williams' personal details and began to harass the hip-hop star.

The N*E*R*D hitmaker was baffled to suddenly field emails from a wannabe musician desperate to work with him - so he traced them back to Diddy's Sean John fashion label.

A source tells the New York Post, "A Sean John employee got his hands on Pharrell Williams' e-mail address somehow. He e-mailed Pharrell so many times asking if they could work together, but Pharrell had no idea who the person writing to him was."

A representative for Combs confirms the story to the Post - but insists the star wasn't involved: "Diddy was not made aware of this incident. A staff member was contacted, and they handled it internally."