NEW YORK (

TheStreet

) --

Goldman Sachs

(GS) - Get Report

will invest $450 million in

Facebook

in a deal valuing the company at $50 billion,

The New York Times

reported early Monday, citing anonymous sources.

Digital Sky Technologies, a Russian investment company that has already invested half a billion dollars in Facebook, will kick in another $50 million, and Goldman can sell up to $75 million of its stake to Digital Sky Technologies, according to the report.

The investment comes as the

Securities and Exchange Commission

is investigating trading in shares of privately-held internet companies, including Facebook,

Zynga

,

Twitter

and

LinkedIn

, an investigation the

Times

reported last month. Investigators may be focused on whether the companies are in violation of disclosure requirements, the newspaper reported.

Goldman's wealth management arm will give its clients a chance to buy into Goldman's investment, according to the report. Still, Goldman is structuring its investment as a "special purpose vehicle," with the idea that this entity would be treated as a single investor for legal purposes. Whether such legal maneuvering will pass muster with the SEC remains to be seen, the report noted.

Citing data from

Sharespost

, a venue where investors can trade shares of privately-held companies,

The Times

says Facebook's value has tripled in the past year.

Facebook is the most visited site on the Internet, ahead of

Google

(GOOG) - Get Report

and

Yahoo

(YHOO)

's mail service, and has attracted advertisers such as

JPMorgan Chase

(JPM) - Get Report

,

Adidas

(ADDYY.PK)

and

Coca Cola

(KO) - Get Report

.

A Facebook spokesman declined to comment and an email to Goldman spokespeople was not returned.

--

Written by Dan Freed in New York

.

Disclosure: TheStreet's editorial policy prohibits staff editors, reporters and analysts from holding positions in any individual stocks.