Among those connected to companies that worked on 235 East 42nd Street were a man who once bribed city officials and a developer who gave a loan to Bernard Kerik.
The inquiry, being conducted by the New York City Department of Investigation and the Manhattan district attorney’s office, was in an early stage, and its focus was unclear.
Brooklyn federal prosecutors accuse Mr. Carone and his brother of profiting from the city’s migrant crisis. He was the chief of staff to former Mayor Eric Adams.
The searches, by police internal affairs investigators and federal authorities, stemmed from earlier scrutiny of Jeffrey Maddrey, the former chief of the department, according to people with knowledge of the matter.
Citizens Union, a government watchdog group, suggested that although Mr. Adams’s federal indictment was dropped, his alleged offenses would still be state crimes.
Top federal prosecutors in New York withdrew from an annual event hosted by the City Bar Association, which has been critical of President Trump’s policies.
U.S. prosecutors charged that Zhan Petrosyants, known as Johnny, submitted millions of dollars in false health care claims. He and his twin brother are close associates of Mr. Adams.
The arrests were part of an investigation that is also examining the conduct of a city councilwoman, her sister and the Brooklyn Democratic leader’s husband.
