Soon after the formation of the new trade union centre one of its affiliates, the electricity workers union led by B.S. Madhav Singh, broke away from the AHTUC and instead joined the
socialist trade union centre
Hind Mazdoor Sabha. In August 1946, the regime began a crackdown on the AHTUC. AHTUC responded by issuing a call to celebrate 17 October 1946 as 'Anti-Repression Day'. This appeal resulted in yet intensified repression on behalf of the Nizam regime. On 30 September 1946 police conducted raids on some 150 houses in
Hyderabad, Secunderabad and other areas in
Telangana belonging to unions, parties and individual leaders that were taking part in the preparations for the 17 October protests. Large amounts of correspondence of the trade union movement were seized in the raids. Police forces were also deployed in industrial areas to hinder workers from gathering to rally against the actions of the government. Police raided the Singareni Collieries Workers Union office in Kothagudem on 12 February 1947. Workers rallied to protest the leaders of the union and help them escape. In total, 20 workers were arrested. They were sentenced to six months' imprisonment each. In the coming months the main leaders of the union were captured and jailed, and the union office was shut down. ==Resistance struggle==