Chancellor Angela Merkel scored a landslide victory in the German election, but has fallen short of the votes needed to win the first absolute parliamentary majority in over half a century.
That means she will be forced to seek a coalition partner, most likely the centre-left Social Democrats (SPD).
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Police said the child, who was without a driving licence, was trying to make his way 2,500 miles from the east coast to Perth.
The 24-year-old was charged with 14 counts of wounding with intent to do grievous bodily harm and one count of throwing a corrosive fluid.
Winds will veer northerly overnight with colder air streaming in over the next few days.