The Congress leaders locked the Chief Secretary from inside his room and did not allow him to move till he gave a written assurance that Delhi government will make all efforts to improve power supply in the city.
As some MLAs, including DPCC chief Arvinder Singh Lovely, blocked the doors of the Chief Secretary's room, some others sat on 'dharna' outside his office, raising slogans against the government.
"The Delhi government has failed miserably in supplying power and water to the people in this sweltering heat. Congress will step up the agitation if the situation does not improve. There was round-the-clock electricity supply when we were in power," said DPCC Chief Spokesperson Mukesh Sharma.
Sharma said Lt Governor Najeeb Jung has not shown any seriousness in addressing the power and water problem.
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Lovely blamed BJP and AAP for the situation and said Congress would not let Delhi become like Uttar Pradesh and Bihar.
Attacking Kejriwal, Lovely said that had the AAP leader made a summer action plan for power supply when he was the Chief Minister, the situation would not have gone out of hand.
He said Congress was not doing politics on power and water issues.
"Officials are blaming the recent thunderstorm for the worsening situation of electricity and water in the national capital. I want to tell them that 148 thunderstorms were reported during the time of the Congress-led government, but there was never a situation like this before," Lovely said.