Here's the full statement by the Russian Defense Ministry:
"According to information obtained from multiple sources, the Kiev regime is preparing a provocation aimed at disrupting the Russian–American talks scheduled for August 15 of this year.
For this purpose, on Monday, August 11, the Security Service of Ukraine (SBU) transported a group of foreign media journalists by car to the city of Chuguyev in the Kharkov region [near the Russian border], under the pretext of 'preparing a series of reports on residents of the city in the frontline zone.'
Directly before the summit on Friday, the Ukrainian Armed Forces are planning a provocative strike using UAVs and missiles against one of the city’s densely populated residential neighborhoods or a hospital, causing significant civilian casualties. The imported Western journalists are expected to 'immediately document' the incident.
As a result of this provocation by the Kiev regime, all responsibility for the strike and the civilian deaths will be placed on the Armed Forces of the Russian Federation, creating a negative media backdrop and conditions for disrupting Russian–American cooperation on resolving the conflict in Ukraine.
Provocations in other settlements under the control of the Kiev regime are also possible."