The criminal-defense lawyer tapped by Mayor de Blasio amid allegations surrounding his 2013 campaign has reportedly canceled a fund-raiser for the mayor’s re-election bid.

Barry Berke postponed the April 26 event days after de Blasio requested he contact the US Attorney’s Office in Manhattan offering cooperation into the investigation, The Wall Street Journal reported.

“In light of my role representing the mayor’s 2013 campaign committee, we’ve decided to postpone our event,” Berke said in an e-mail obtained by the Journal.

Meanwhile, de Blasio remained mum on whether his administration has been contacted as part of the probe.

“I’m not going to get into the details day-by-day,” Hizzoner said.

His response was a departure from last week, when he volunteered that “to this hour, we still have not heard from any federal agency.”