Professional Burglars or Professional Rock Band?
They help the victims overnight until the next part of the plan. The employees were to disable the security system, granting access to the robbers. They ended up making off with 12 million francs ($3.5 million today) scot-free, no injuries to anyone involved. The police immediately suspected gang activity, as the heist was pulled off perfectly. Being punk rock, the band just had to brag about their winnings… This lead them to their downfall.