Coal production in state-owned Singareni Collieries company was hit as employees belonging to TRS-affiliated trade unions struck work. Production was affected in the coal mines spread across Khammam, Warangal, Karimnagar and Adilabad districts.
In Adilabad district alone, 20,000 coal workers in 18 mines were participating in the strike, affecting production of 40,000 tonnes of coal.
Police stepped up security in Hyderabad and other parts of Telangana to prevent any untoward incident. Forces were deployed in the core area of Hyderabad and outskirts to maintain law and order.
A police official said there were no reports of any violence in the region.
TRS has called for the shutdown, demanding the centre to drop the reported proposal to merge two of the four districts of Rayalaseema with Telangana to carve out Rayala-Telangana.
TJAC, BJP, CPI and other groups are supporting the call. They want the centre to carve out Telangana state comprising 10 districts as resolved by the Congress Working Committee and the union cabinet.
Group of Ministers (GoM), which went into issues relating to bifurcation of Andhra Pradesh, has reportedly recommended formation of Rayala-Telangana. The GoM headed by Union Home Minister Sushilkumar Shinde Wednesday night finalized its report.
Shinde said the GoM recommendations would come up for discussion during the union cabinet meeting scheduled to be held Thursday evening.