Federal officials served the San Francisco Public Utilities Commission with a sweeping subpoena last month, demanding numerous records and documents that appear to draw the agency into the widening City Hall corruption scandal touched off by the arrest of former Public Works Director Mohammed Nuru in January.
The U.S. Attorney’s Office issued the subpoena on June 15, according to a copy obtained by The Chronicle on Friday.
The subpoena suggests that federal investigators are interested in examining contracts the commission awarded to several companies, some of which have previously been linked to alleged schemes traced back to Nuru in investigations by the FBI and the City Attorney’s Office.