The report was produced by the inspector general of the Intelligence Community, which has responsibility for 17 separate agencies, and the inspectors general from the Department of Homeland Security, the Justice Department and the Central Intelligence Agency. It has not been made public, but members of Congress are scheduled to be briefed on it Thursday, and some of its findings are expected to be released before Tuesday, the first anniversary of the bombings.

Its contents were described by several senior American officials who spoke on the condition of anonymity because the report has not been publicly released.

The review is similar to an internal review the F.B.I. conducted after the bombing. In that review, the bureau found that its agents had been restrained from conducting a more extensive investigation because of federal laws and Justice Department guidelines that prevent them from using surveillance tools like wiretapping in investigations like those conducted on Mr. Tsarnaev before the bombings.

“Had they known what the Russians knew they probably would have been able to do more under our investigative guidelines, but would they have uncovered the plot? That’s very hard to say,” one senior official said.

While the review largely exonerates the F.B.I., it does say that agents in the Boston area who investigated the Russian intelligence in 2011 could have conducted a few more interviews when they first examined the information.

The report also recommends several steps it says the F.B.I. should take to more effectively share information with state and local authorities, the officials said. The F.B.I., which has worked with police chiefs from around the country over the past year on how it can better share information, has already adopted several of the recommendations, according to the officials.