The federal prosecutor appointed by Attorney General William P. Barr to review whether Obama-era officials improperly requested the identities of individuals whose names were redacted in intelligence documents has completed his work without finding any substantive wrongdoing, according to people familiar with the matter.

The revelation that U.S. Attorney John Bash, who left the department last week, had concluded his review without criminal charges or any public report will rankle President Trump at a moment when he is particularly upset at the Justice Department. The department has so far declined to release the results of Bash’s work, though people familiar with his findings say they would likely disappoint conservatives who have tried to paint the “unmasking” of names — a common practice in government to help understand classified documents — as a political conspiracy.

The president in recent days has pressed federal law enforcement to move against his political adversaries and complained that a different prosecutor tapped by Barr to investigate the FBI’s 2016 investigation of his campaign will not be issuing any public findings before the election.