First Lady Michelle Obama, Beyonce, and several other celebs are the latest victim of a hacker who has posted the financial information of dozens of celebrities. A website using a Russian Web address have posted what appears to be the personal or credit information of numerous celebrities.

WASHINGTON (Reuters) – President Barack Obama said on Tuesday that U.S. authorities are investigating whether hackers unearthed and posted online financial information that belongs to first lady Michelle Obama and a variety of celebrities like Beyonce and Jay-Z.

“We should not be surprised that if we’ve got hackers that want to dig in and have a lot of resources, that they can access this information,” Obama told ABC News. “Again, not sure how accurate but … you’ve got websites out there that tell people’s credit card info. That’s how sophisticated they are.”

The FBI and other U.S. agencies said they were investigating a website that posted financial and personal information about Michelle Obama, Vice President Joe Biden, other government figures and celebrities.

Some of the information was fraudulently obtained via a commonly used website for consumer credit reports, according to credit monitoring firm Equifax Inc, which said it was launching its own internal investigation.

It was unclear how much of the data, which first appeared on the website on Monday, was accurate or who posted it.

The site listed Social Security numbers, telephone numbers, addresses and credit reports purportedly belonging to 18 prominent Americans. At least some of the telephone numbers were inaccurate.

The website, whose first page portrayed a mysterious-looking woman wearing heavy eye make-up with one finger over her lips, was still accessible on Tuesday although some links relating to individuals could not be opened.

Others listed on the page included FBI Director Robert Mueller, Attorney General Eric Holder, former Secretary of State Hillary Clinton, Los Angeles Police Chief Charlie Beck, actors Ashton Kutcher and Arnold Schwarzenegger, and property mogul Donald Trump.

Asked about the posting on Michelle Obama, Secret Service spokesman George Ogilvie said: “We are investigating the matter. Due to the ongoing investigation we can’t comment any further.” A Justice Department spokeswoman said the FBI was investigating.