Tesla Inc’s Board Questioning CEO Elon Musk Financing because they have not yet received any detailed about this famous financing plan, indeed the board is seeking more information to understand how the CEO Elon Musk will proceed to take the U.S. electric maker private in a proposed deal worth $72 billion.

Tesla’s board raised various questions multiple about Musk’s proposal since the information became public Tuesday, under a financial pressure investors the publicly declared it has not yet received specific information on will the funding, one of the sources said.

However Elon Musk, a 47-year-old entrepreneur, and an engineer, stunned financial markets Tuesday, when he revealed Twitter he was considering a take-private deal for Tesla, an auto manufacturing pioneer developed the world’s first ever premium all-electric sedan car.

This bold turn-over came because of the Tesla funder and CEO Elon Musk has launched for months a drastic battling with the investors. a moment when public opinion, media journalists, and analysts asked whether Tesla could turn a profit and produce enough of the mass market sedan model electric to meet demand.

Musk said in a tweet Tuesday he had secured financing for the deal, but he did not publicly further details.

Speculation has swirled among shareholders and investment bankers about could fund a deal of size, especially given the ’s bonds are already rated junk by credit rating agencies.

The U.S. Securities and Exchange Commission has contacted Tesla to ask about CEO Elon Musk assertion Twitter funding for his proposed deal was “secured”, the Wall Street Journal reported Wednesday.

The revelation the board is seeking more details Musk could raise new questions about how he plans to the deal his proposed price of $420 per share.

After jumping to close at $379.57 Tuesday, Tesla shares have since fallen about 7 percent to end trading at $352.45 Thursday, amid skepticism over the deal’s prospects.

In a Wednesday, Tesla’s board said its discussion with Musk “addressed the funding” for the deal, without offering more details.

The board expects to make a decision whether to launch a formal review of Musk’s proposal in the coming days and is speaking to investment bankers about hiring financial advisers to assist it in its review in scenario, the sources said.

If the board launches a formal review of CEO Elon Musk bid, he would have to recuse himself, or a special board committee would have to be formed, according to the sources, requested anonymity because the deliberations are confidential.

The exact information Musk communicated to the board about his could not be learned.

Taking Tesla private would remove the pressure Musk coming hedge funds betting the ’s stock will drop given its production issues and negative cash flow, as well as the glare of Wall Street comes with reporting quarterly earnings publicly.

The faces a make-or-break moment in its eight-year history as a public as competition European automakers is poised to intensify with new electric vehicles Audi and Jaguar, with more rivals entering the market next year.

Tesla is still working its way out of what Musk called “production hell” its home factory in Fremont, California, where a series of manufacturing challenges delayed the ramp-up of production of its new Model 3 sedan which the ’s profitability rests.

Meanwhile, Tesla has announced plans to build a factory in Shanghai, China, and another in Europe, but details are scarce and funding unknown.