Federal investigators executed a search warrant at former New York mayor Rudy Giuliani's apartment as part of the Ukraine probe.

Federal agents raided former Mayor Rudy Giuliani’s Manhattan apartment and office on Wednesday morning, two law enforcement sources briefed on the matter told The Post.

The agents executed a search warrant and seized electronic devices from both locations, one source said.

The moves were tied to an investigation into Giuliani’s dealings in Ukraine, according to reports.

A resident of Giuliani’s Upper East Side building on East 66th Street said the doorman described greeting the agents at 6 a.m. and letting them pass when they displayed a search warrant.