Police said the attacker`s father, a gun club member, owned 16 guns, one of which was missing.
The gunman entered the school in Winnenden at 9:33 am after classes had begun and opened fire, shooting at random, police said. He killed nine students, three teachers and a passer-by outside the building, officials said. Two other people were killed later.
Image: Pupils look from windows at the Albertville school complex in Winnenden near Stuttgart, Germany, on Wednesday, March 11, 2009.
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