Several CPI (M) leaders and party workers were taken into custody after they tried to lay siege to the APEPDCL’s sub-station and ERO at Pandimetta here on Tuesday in protest against imposing power surcharge on consumers. The CPI(M) men blocked the gates of sub-station. The police took them away in vehicles. Member of city secretariat V.S. Padmanabha Raju strongly criticised the government for hiking the power charges and also the surcharge.