William K. Rashbaum and Jonah E. Bromwich

An investigation into the mayor’s former buildings commissioner is expected to yield bribery and mob-related charges against several people who helped raise money for Mr….

Eric Ulrich, who was the commissioner of New York City’s Buildings Department, resigned in May amid an investigation by the Manhattan district attorney’s office.

An indictment could be handed up as soon as Wednesday, but much about how the process might play out remains unknown.