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According to a press release from KCR's office, Rama Rao's appointment was necessitated as Chandrasekhar Rao will have to concentrate on national politics and also focus on various developmental activities in the state.
Party president and chief minister K Chandrasekhar Rao appointed Sircilla MLA as the working president, it said.
KCR believes that the party will further progress under the leadership of KTR, it added.
Chandrasekhar Rao returned as the chief minister for the second consecutive term on Thursday.
TRS won 88 seats in the 119-member assembly in the December 7 polls.
Soon after the results were announced, KCR declared that the TRS would play a crucial role in national politics.
He has been pitching for a non-Congress, non-BJP federal front of regional parties to take on the two national parties.
"...Congress-mukt Bharat... BJP-mukt Bharat... that is needed," he had said.
Also read:TRS to raise host of issues in Parliament
Meandwhile, KCR has rewarded Mohammad Mahmood Ali once again for his loyalty by inducting him into his cabinet and allotting him the Home portfolio.
Ali, a member of the Telangana Legislative Council, was the only minister to take oath along with Rao on Thursday.
According to a statement from chief minister's office on Thursday night,
KCR has allotted him Home portfolio.
Ali was holding Revenue portfolio in KCR's previous cabinet.
It was immediately not clear if Ali will be deputy chief minister, a post he held in the previous cabinet.
Also read:PM congratulates 'KCR Garu', as he takes over reins of Telangana