Revanth Reddy, the Congress candidate from Kodangal in Telangana, was detained early today for trying to "obstruct" a public meeting of caretaker chief minister and Telangana Rashtra Samiti (TRS) chief K Chandrashekhar Rao. In a notice to the Congress party, the state election body said, on December 2, a "protest call" was given by Mr Reddy to stop KCR's campaign rally in Kodangal.