Tim Kretschmer killed himself after the shootings
The father of a German teenager who went on a shooting spree in March, killing 15 people, has been charged with manslaughter.
Tim Kretschmer, 17, took his father's pistol and burst into his former school in Winnenden, near Stuttgart, opening fire, before killing himself.
His father has now been charged with 15 counts of manslaughter for failing to keep his gun secure.
Prosecutors said he had "negligently" stored weapons and bullets.
Kretschmer used his father's legally-registered pistol to kill eight schoolgirls, a schoolboy and three teachers at Albertville secondary school on 11 March.
Quantity of ammunition
He then commandeered a car and killed two more people in the town of Wendlingen, 40km (25 miles) away before he shot himself as police approached.
His father Joerg had legally kept more than a dozen weapons in his house.
Prosecutors said his father had "negligently made possible the actions of his son in that he stored the weapons... in such a way that Tim could get his hands on a gun and a large amount of ammunition."
He has been charged with 15 counts of manslaughter, 13 counts of grievous bodily harm and breaking gun laws, the prosecution said.