Telangana Civil supplies minister Kamlakar and MP Ravichandra, both the leaders of Telangana Rashtra Samithi were summoned by the CBI to appear for questioning, they said.
Earlier the houses and offices of Kamalakar were raided by the CBI in connection with the Mines scam.
The CBI on Monday arrested a man who allegedly met private individuals at the Tamil Nadu Bhavan here and demanded costly gifts posing as a joint director of the agency, officials said.
The arrested, identified as Kovvi Reddy Srinivas Rao, allegedly demanded gifts from private individuals assuring them of lobbying with unidentified public servants on their behalf in cases registered by different central investigative agencies, they said.
The agency is probing alleged political connections of Srinivas, who was flaunting them to get work done, they said.
It is alleged that Srinivas posing as a senior IPS officer, allegedly met six persons after coming to the national capital on November 22 on various occasions, offering them favorable outcomes in various matters pending before government authorities, they said.