Meanwhile, "Workers' Truth" had received publicity in the Berlin-based Menshevik journal "Sotsialisticheskii Vestnik", and they also distributed a manifesto at the 12th Bolshevik Congress and were active in the industrial unrest which swept Moscow and Petrograd in July and August 1923. On 8 September 1923, Bogdanov was among a number of people arrested by the GPU (the Soviet secret police) on suspicion of being involved in them. He demanded to be interviewed by Felix Dzerzhinsky, to whom he explained that while he shared a range of views with "Workers' Truth", he had no formal association with them. He was released after five weeks on 13 October; however, his file was not closed until a decree passed by the Supreme Soviet of the USSR on 16 January 1989. He wrote about his experiences under arrest in "Five weeks with the GPU".