BEIJING (AP) — The founder of the Chinese insurance company that bought New York City's Waldorf Astoria Hotel during a global acquisition spree has been detained by regulators, a business news magazine said Tuesday, following reports of possible financial misconduct.

Anbang Insurance Group Ltd. Chairman Wu Xiaohui was "taken away by authorities" on Friday, said Caijing, citing unidentified sources. It said officials of the insurance regulator announced the action the following day at a company meeting but gave no details.

Spokespeople for Anbang did not respond to phone calls or emails Tuesday evening.

Anbang, founded by Wu in 2004, expanded rapidly to become one of the biggest companies in a staid Chinese insurance industry dominated by state-owned companies.

The industry has faced heightened scrutiny since late last year following complaints of reckless speculation by insurers in stocks and real estate. The chairman of the Chinese insurance regulator is under investigation by the national anti-corruption agency.

Anbang made a multibillion-dollar series of acquisitions in the United States, Europe and other foreign markets, including buying the Waldorf in 2016 for $2 billion. That prompted questions about how the company was paying for its purchases.

The company discussed possibly investing in a Manhattan skyscraper owned by the family of Jared Kushner, U.S. President Donald Trump's son-in-law and adviser. Those talks ended in March without a deal.

Anbang, which is privately held, said the money for its global acquisitions was raised from shareholders.

The company denied accusations in April by another business news magazine, Caixin, that it improperly used payments by policyholders to increase its capital.

The company also denied rumors that spread on Chinese social media in April that Wu had been detained.

In May, Anbang was ordered to stop selling two financial products that regulators said violated industry rules.

Wu rarely talks to reporters or appears in public, but Caijing said he attended a series of public events in recent weeks. That included a May 12 meeting called by the insurance regulator to study a speech by President Xi Jinping about financial regulation