Goldman Sachs said it will limit its private placement of shares of social-networking site Facebook to investors outside the United States, citing “intense media coverage,” according to the investment bank.

Several weeks ago, Goldman approached its best private wealth clients with an offer to take part in a special fund that will own shares in world’s biggest social-networking site. The deal would allow Goldman to offer clients a hot investment opportunity, while allowing Facebook to remain a private company.

But it also blurred the line between public regulated markets and hands-off private markets and has drawn the attention of the SEC.