German authorities are wondering how to deal with a pensioner who stored a World War Two tank, anti-aircraft gun and torpedo in his basement?

Very carefully, I would say.
The items were removed from a house in the northern town of Heikendorf in 2015 with the help of the army.
Prosecutors and defence lawyers are now negotiating possible penalties, including a suspended sentence and a fine of up to €500,000 (£427,000).
The defendant, aged 84, must also find new homes for the monumental items.