The WSJ is saying during Prigozhin's mutiny at least 13 Russian officers were detained for questioning, and around 15 were suspended from duty or fired. These officers include General Surovikin (not seen since the mutiny), Surovikin's deputy Col. Gen. Andrey Yudin, Lt. Gen. Vladimir Alexeyev (deputy head of intelligence who was seen in Rostov with Prigozhin during the mutiny), and former Col. Gen. Mikhail Mizintsev, who joined Wagner in April.
Surovikin early in the mutiny recorded a video telling Wagner to stand down. Alexeyev likewise recorded a video telling Prigozhin to come to his senses.