"I don't know if we will be able to get the remains or not, but it is a must to do it and we will do it. I hope, of course, it will be a success," Patrushev told a Russian TV program.
There are technical possibilities for Russia to find and study the wreckage of the drone, Russian Foreign Intelligence Service Director Sergei Naryshkin said on the program.
The United States is conducting intelligence activities in the Black Sea "very actively, using all means" and Russia knows about the U.S. goals in detail, he added.
Russia-U.S. relations are "at their lowest point, in a very deplorable state," Kremlin spokesman Dmitry Peskov said Wednesday, commenting on the drone incident.
����✈️����US very actively conducting intelligence in region near special military operation, Russia is working to identify objects of greatest interest to Washington - Russian Foreign Intelligence Chief Naryshkin on downing of US Reaper drone pic.twitter.com/TIgW7ftpVP
President Vladimir Putin has been informed of the situation, and there were no Moscow-Washington contacts at the highest level over the incident, Peskov told a daily briefing.
On Tuesday, Russian Ambassador to the U.S. Anatoly Antonov called the incident "a provocation," stressing that "we must be very careful in our actions given the events that are taking place in Eastern Europe."
According to the Russian Defense Ministry, Russian fighter jets were scrambled to identify a U.S. MQ-9 drone approaching the Russian state border, and the unmanned aerial vehicle crashed into the Black Sea due to its own sharp maneuvering.