Moscow, Aug. 13 -- Investigators have found evidence suggesting Russia's involvement in a recent breach of the US federal court document system, which contained highly sensitive records with information that could reveal sources and people charged with national security crimes, The New York Times reported, citing several people who briefed on the breach.

The disclosure comes as US President Donald Trump is expected to meet with his Russian counterpart, Vladimir Putin, in Alaska on Friday, where Trump is planning to discuss his push to end the war in Ukraine. While it's unclear whether an arm of Russian intelligence is behind the hack or if other countries were involved, some of the people familiar with the matter described it as a years-...