(CNN) Attorney General William Barr is not sending the "principal conclusions" of special counsel Robert Mueller's report to lawmakers Saturday, multiple congressional sources and a Justice Department official told CNN.

But Barr conveyed to his team he still wants to get the conclusions to the Hill by this weekend, according to the Justice official.

Barr and Deputy Attorney General Rod Rosenstein arrived at their Justice Department offices Saturday morning to work together, reviewing and analyzing Mueller's confidential report, the official told CNN.

The official said that Barr and Rosenstein, along with a select few advisers, were still there as of Saturday afternoon.

The "principal conclusions" that Barr promised lawmakers will be derived from the special counsel's report -- a distillation of the main takeaways from the report, rather than a word-for-word summary.

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