The recently announced rescue package for Sauber is worth around $170m according to a report.
However, team owners Monisha Kaltenborn and Peter Sauber are denying suggestions that the team was sold instead insisting the new Russian investment is part of a new partnership.
It is believed nothing will change managerially with the new investment however, young Russian driver Sergey Sirotkin is set for a seat at the team next season.
According to the press release from Sauber the new investment has come from the Investment Cooperation International Fund, The State Fund of Development of North-West Russian Federation and the National Institute of Aviation Technologies.
The statement also stated that the deal would entail the promotion of the sport in Russia at the inaugural Russian Grand Prix next year and the development of technology that will "open up ... new revenue streams".
While the figure was not officially announced the Swiss portal 20 Minuten claims the investment totals $170m, wiping out the team's debt and paying up suppliers.
There are some concerns however, with some Swiss publications questioning not only where the money is coming from but some claiming the deal will ultimately be a dead end.
However, one of country's leading newspapers Blick said: "It doesn't matter where the money comes from. What is important is that it comes."
And the team insist this new tie-up will lead to a long term future.
"This extensive cooperation will showcase Russian innovation at the pinnacle of motor sport," said Sauber.
"At the same time, the Sauber F1 team will have a solid foundation to increase its competitiveness on a long-term basis."
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