The group, which reportedly has around 6,000 followers, has been accused of establishing a “counter-state’’ and building criminal economic structures.
The aide is charged with acting as an agent for a foreign secret service.
The German Weather Service had issued a slippery roads warning for the north and north-west of Germany.
Taking control of the Rosneft Deutschland is the latest move by Germany to shore up its energy industry.
The 28-year-old told police he was jealous of car owners and had “personal problems”.
She left Germany for Syria at the age of 15 before returning in 2020.
