It's straight out of the movies! Earlier this week, police discovered that robbers had dug a 100-foot long tunnel into the safe deposit room of a Berlin bank. They looted the safety boxes within, which some reports have said to be worth up to €10 million. Afterwards, they set fire as they left to cover up their tracks.
From The Telegraph (Image: Fabrizio Bensch/Reuters):
Police were alerted to the break-in at the Berliner Volksbank branch early on Monday morning when a security guard noticed smoke coming from the vault.
They besieged and eventually stormed the safe room where the thieves had holed up only to find out they had escaped through a tunnel dug by accomplices.
The tunnel originated in a nearby underground parking garage and must have taken the robbers weeks if not months to dig through. As this illustration from Die Welt showed, the robbers probably used their cars to haul away dirt from the dig: