But by the end of June 1953, it had become clear that the efforts to convince the Marxist-Leninists that the exculpation of the doctors had been justified had only been temporarily successful. Headed by Beria, the security forces, under Marxist-Leninist control since the readjustment of portfolios after Stalin's death, were continuing to inestigate the 'doctors' case'.
Clearly, if the revisionist conspirators were to feel safe, Beria and his Marxist-Leninist colleagues in the security forces had to be eliminated as a matter of urgency.
On 10 July 1953, a few days after Beria had been arrested, a leading article in 'Pravda' revealed the real reason for that arrest -- a reason not disclosed in the report of his 'trial' -- namely, that he had 'deliberately impeded' and 'tried to distort' instructions of the Central Committee and the Soviet government designed to clear up ‘certain illegal and abritary actions' -- an obvious reference to the 'doctors' case’:
"Having been charged with carrying out 'the Instructions of the Party Central Committee and the Soviet Government with a view . . . to clearing up certain illegal and arbitrary actions, Beria deliberately impeded the implementation of these instructions and, in a number of cases, tried to distort them".
('Pravda', 10 July 1953, in: B. Nicolaevsky: op. cit.; p. 147).