The letter, which was published on a radical left platform, said it had cut the power supply to the Tesla site by setting fire to six high-voltage cables above ground.
“Tesla is neither green, ecological nor social,” said the letter, according to the LKA spokeman.
Tesla, which has said it could produce up to 500,000 Model Y cars at the site annually, delayed the opening of its gigafactory to late 2021 from an initial July 1 date after adding plans to set up a battery cell plant there.
Tesla CEO Musk has complained about German red tape needed for lengthy approval processes after construction of the factory was held up by environmentalists concerned about local wildlife and water resources.
