Production came to a standstill and workers were evacuated Tuesday after a power outage that officials suspected was caused by arson, with a far left group claiming the attack. Elon Musk, Tesla's CEO, condemned the incident and insulted the attackers.

The interior ministry in the state of Brandenburg, where the plant is located, said unidentified people were suspected of deliberately setting fire to a high-voltage transmission line on a power pylon. The state criminal investigation department began an investigation. Police said they had been made aware of an emailed claim of responsibility, which they were examining, German news agency dpa reported.