PALM BEACH, Fla. (AP) – Federal authorities seized disgraced financier Bernard Madoff’s Palm Beach mansion, his vintage yacht and a smaller boat Wednesday, part of an effort to recoup assets to pay back investors he swindled.

Barry Golden, a spokesman for the U.S. Marshals Service, said about five U.S. marshals arrived at the 8,753-square-foot, five-bedroom mansion late Wednesday afternoon, hours after marshals seized the boats. Authorities planned to enter and secure the mansion, change the locks and conduct an inventory of the property, which Palm Beach County records show had a taxable value of $9.3 million last year.

Golden said marshals will spend about three to four hours filming and photographing items in the house that might be removed at some point. The mansion was unoccupied when federal authorities arrived.

“It’s not an April Fools’ joke,” he said.

Palm Beach County property records show the mansion was purchased in 1994 under his wife Ruth’s name for $3.8 million. The 2008 property tax bill was $157,298. Golden said the estate would be “monitored and maintained” and is no longer considered Madoff’s property.

“Once the judge signed the order, it stopped being Bernie Madoff’s home,” Golden said.

Earlier in the day, Golden said Madoff’s 55-foot yacht named “Bull” and a 24-foot motor boat were taken from marinas on Florida’s east coast. The yacht, a 1969 Rybovich, is worth $2.2 million.

“A lot of money was put into maintaining this boat,” Golden said. “This boat was extremely well kept, extremely clean. Engine compartment was spotless. It looked like somebody took a bottle of 409 and scrubbed it every day.”

Madoff, 70, is in jail in New York awaiting sentencing after he pleaded guilty to swindling billions from investors in what could be the biggest scam in Wall Street history. He faces up to 150 years behind bars.

Prosecutors are seizing as much as they can of Madoff’s personal fortune, and have begun demanding millions of dollars in payments from his relatives. Roughly 6,700 people have filed claims for a share of whatever is recovered. Thousands more – some who lost in excess of $1 million – are expected to come forward.

Court documents filed by Madoff’s attorneys indicate Madoff and his wife had up to $826 million in assets – including the boats – at the end of last year.

If prosecutors get their way, Madoff and his wife, who has not been charged, will have to give up all their assets, including a $7 million Manhattan penthouse bought in 1984, the Florida home, a $1 million home in Cap d’ Antibes, France and a $3 million luxury home on New York’s Long Island. The government also wants Madoff and his wife to forfeit $10 million in furnishings for all the homes and luxury cars, among other items.

Defense attorneys have indicated they may try to keep the Manhattan apartment, as well as about $62 million in securities, for his wife.

“We have no objection to the seizure or to the assets being sold,” lawyer Ira Sorkin said in brief remarks Wednesday. “The proceeds of the sale will be put aside for discussion at a later date.”

Also Wednesday, Massachusetts’ top securities regulator accused a major feeder fund for Madoff’s investment scheme of misrepresenting its lack of knowledge about Madoff’s operations.

Secretary of State William Galvin accused Fairfield Greenwich Group of Connecticut of civil fraud charges, saying company officials were coached by Madoff on how to answer questions about his investment practices and misrepresented how much they really knew.

As far back as April 2008, Galvin said, Fairfield Greenwich principals began discussing the risk that Madoff would “blow up,” but didn’t disclose that risk to investors. He also said that Fairfield Greenwich kept a database of standardized responses to investors’ questions, designed to reassure them that the firm had adequate controls to supervise assets at Madoff’s company.

The administrative complaint seeks restitution for Massachusetts investors for losses from Fairfield Greenwich.

Fairfield Greenwich said in a statement the allegations are false and misleading and it intends to “vigorously” contest them. “FGG is appalled by the Madoff losses suffered by its investors, including its employees and the three investors who reside in Massachusetts,” the statement said.

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Lush reported from Miami. Associated Press Writers Sarah Larimer in Miami and Kelsey Abbruzzese in Boston contributed to this report.

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