Federal Investigators Search Rudy Giuliani’s Apartment and Office

Federal investigators in Manhattan executed search warrants early Wednesday at the home and office of Rudolph W. Giuliani, the former New York City mayor who became President Donald J. Trump’s personal lawyer, stepping up a criminal investigation into Mr. Giuliani’s dealings in Ukraine, three people with knowledge of the investigation said.

The investigators seized Mr. Giuliani’s electronic devices and searched his apartment on Madison Avenue and his office on Park Avenue at about 6 a.m., two of the people said.

Executing a search warrant is an extraordinary move for prosecutors to take against a lawyer, let alone a lawyer for a former president.