Tamil Nadu CM Edappadi K Palaniswami has said the state will move the Supreme Court, challenging National Green Tribunal's (NGT) decision to reopen Vedanta's Sterlite copper plant in Tuticorin. On May 28, the state government had decided to permanently close the plant following protests. Calling the closure "unjustifiable", NGT on Saturday ordered reopening of Sterlite plant within three weeks.