updated 7/7/2010 4:26:15 PM ET 2010-07-07T20:26:15

BP's embattled CEO flew to Abu Dhabi and met with the wealthy emirate's influential crown prince amid speculation the oil giant is looking to raise cash as costs mount to contain the Gulf of Mexico oil spill disaster.

Chief Executive Tony Hayward arrived in the Emirati capital Tuesday and met with crown prince Sheik Mohammed bin Zayed Al Nahyan during his stay, BP spokesman Andrew Gowers said. He left later Wednesday.

Gowers wouldn't say whether BP met directly with the sheikdom's powerful investment funds, which have provided needed cash to Western multinationals in past times of crisis. But Sheik Mohammed either leads or is closely related to the heads of a number of them.

"He's visiting partners as he does from time to time. He's conducting normal business," Gowers said of Hayward's visit.

Separately, BP confirmed Wednesday that it received a demand from U.S. authorities for advance notice of any asset sales or significant cash transfers.

The Financial Times reported that U.S. Assistant Attorney General Tony West, who heads the Civil Division of the U.S. Department of Justice, wrote to Rupert Bondy, BP's general counsel, on June 23. Normally the U.S. Justice Department does not require advance notice of such deals.

"We have received the letter, and have not yet responded," said BP press officer Sheila Williams. "We will be responding in due course."

She declined to say whether the Justice Department had set a deadline.

The letter underlines the U.S. government's intense scrutiny of BP as it struggles to cap the oil leak in the Gulf of Mexico, which began on April 20, and to clean up the damage.

Hayward has been criticized for his handling of the oil spill in the U.S., and in recent days traveled to other countries where BP operates to reassure the company's partners of its commitments.

BP has a long-standing partnership with the state-owned Abu Dhabi National Oil Co., which is responsible for crude oil production in the Arab emirate.

Abu Dhabi is the capital of the seven-state UAE federation and holds the bulk of the OPEC member's oil wealth. Power rests with the family of the emirate's hereditary ruler, who is also the UAE's president.

Hayward's visit comes as speculation swirls that BP might be looking for investment partners from the Middle East. Its costs to clean up the spill have shot past the $3 billion mark, not counting a $20 billion fund for damages the company created last month.

BP's shares rose earlier in the week amid reports it was reaching out to Gulf funds about investment opportunities in an attempt to raise cash to cover the cleanup and fend off possible takeover bids.

In the latest twist, Saudi daily al-Eqtisadiah reported Wednesday that a delegation of Saudi investors was headed to London to discuss an acquisition of up to 15 percent of BP. The report didn't say where it got the information, and could not be independently confirmed.

Abu Dhabi is home to several of the Arab Gulf's most influential sovereign wealth funds.

A spokesman for the Abu Dhabi Investment Authority, believed to be the world's biggest sovereign fund, declined to comment on whether Hayward paid a visit during his trip. Representatives for other big funds in the emirate either did not respond or could not be reached for comment.

BP said this week it would welcome new investors but had no plans to issue new shares to help pay for the oil spill. Analysts say BP could also sell off stakes in a number of oil and gas projects around the world to raise cash.

BP shares have lost about half their value since the Deepwater Horizon oil rig exploded in April, causing the worst offshore oil spill in U.S. history.

Saud Masud, head of Middle East research at Swiss bank UBS, said a deal between BP and Mideast government funds, which tend to be passive, long-term investors, would make sense for both sides.

"Any time you have a 50 percent drop in a stock price, people will take notice of it," he said. "There are several Middle East investors who could be interested."

Mideast funds have helped out a handful of struggling Western companies in recent years.

Abu Dhabi's ADIA agreed to invest $7.5 billion into Citigroup in late 2007 to help it offset big losses from mortgages and other investments. A year later, state-backed investors from Abu Dhabi and the nearby gas-rich nation of Qatar injected billions of pounds into British bank Barclays.

There is precedent for Gulf investment in BP. Kuwait's sovereign wealth fund, the Kuwait Investment Authority, already ranks among the company's biggest shareholders. Funds in Norway, Singapore and China also hold large stakes in the company.

Hayward arrived in Abu Dhabi from the capital of oil-rich Azerbaijan, where he tried to calm fears BP might sell assets there to help pay for the spill clean up. While in Baku, Hayward met with Azerbaijan President Ilkham Aliyev.

The BP CEO also met with Russian officials in Moscow last week. Following those meetings, an official at the company's Russian joint venture TNK-BP said that firm would consider buying some of BP's assets if they were put up for sale.

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Video: Oil reaches Lake Pontchartrain

  1. Transcript of: Oil reaches Lake Pontchartrain

    LESTER HOLT, anchor: The Coast Guard says drilling to shut down the gushing oil well in the gulf is ahead of schedule, but there's no slowdown in the movement of oil already drifting across the gulf. NBC 's Kerry Sanders has the latest from Lake Pontchartrain in New Orleans . Kerry , good morning.

    KERRY SANDERS reporting: Well, good morning, Lester . Louisiana state officials say they have now found more than 1600 tar balls here in Lake Pontchartrain , yet one more indication that oil that's escaping into the gulf is traveling far and wide. Lake Pontchartrain , 630-square-miles, the second largest saltwater lake in the United States , and now the same waters that overtopped the levees and flooded New Orleans during Hurricane Katrina are now getting hit with tiny tar balls. Those may look like autumn leaves, but that's oil, weathered and pushed here by the wind and high surf. Effectively, the flow gushing into the gulf 125 miles away is now at New Orleans ' front door.

    Ms. SUSAN BERGMARK (Lake Pontchartrain Resident): I guess I had my heart set that it wasn't going to happen here.

    SANDERS: Experts say the volume of oil flowing into the gulf made this latest arrival into Lake Pontchartrain inevitable because so little has been captured. Before the crisis, BP filed documents with the government that in an emergency they could collect a precise 491,721 barrels of oil each day. But since the disaster began, Coast Guard statistics reveal BP 's fallen far short. It's taken 79 days to collect what they initially said would only take 32 hours.

    SANDERS: This morning Louisiana wildlife officials have closed off 40 square miles of Lake Pontchartrain here to fishing. The fear, of course, is that the problem now in the front door of New Orleans is only going to get worse.

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