A game between two co-op teams was underway when the sound of about 11 gunshots suddenly shattered the action, as captured in the chilling livestream footage.
Investigators say there are still no suspects or named persons of interest in Nancy's disappearance, as the search for the 84-year-old woman in Tucson entered its third week.
Yulia Navalnaya thanked Britain and its allies for helping determine that Alexei Navalny's death two years ago was caused by a powerful neurotoxin called epibatidine.
Nanos and his team — working alongside federal investigators — believed earlier this week that they were close to cracking the case when they detained a delivery driver.
Ahead of the Olympics, the Court of Arbitration for Sport made it clear that disputes like this are ideally settled "within hours" of a competition ending.
The latest update follows the release of chilling footage that showed a masked man standing at Nancy's front door and fiddling with her doorbell camera.