Thieves stole many things from a bank. They took money, gold, and nice jewellery. They opened over 3,000 boxes. Police found out on Monday. A fire alarm at a bank in Gelsenkirchen helped police.
The thieves went into the bank's big room. They went in on Saturday night or Sunday. They used a car park to get in and out. This helped them hide. They used special tools. They planned this well.
Police say the robbery was very good. It was like a movie. Police have a hard job now. People are checking their boxes. The stolen things are worth about 30 million euros.
A fire alarm helped police find the problem. Police saw a black car leave. Some people saw men with big bags. This might help police catch them.
The thieves robbed the bank at Christmas. This was a good time for them. Fewer people were there. Police have not caught anyone. They want help from the public.