The discussions, which started on Thursday night and lasted approximately two hours, resumed Friday morning and are anticipated to continue into Saturday, according to the report.
During the Thursday talks, Witkoff and Kushner provided the Ukrainians with a detailed briefing on their meeting with Russian President Vladimir Putin earlier this week in Moscow, as well as new ideas aimed at bridging the gaps between the parties.
Kremlin aide Yuri Ushakov said earlier on Friday that Russia is waiting for the reaction from Washington to Putin's discussions with Witkoff and Kushner.
Since mid-November, the Trump administration has been promoting a new peace proposal for Ukraine. Media reported that the original 28-point draft was revised down to 19 points after US, Ukrainian, and European officials met in Geneva for talks on November 23.