German police have arrested a 16-year-old Afghan youth on suspicion of a connection to the killing of nine people by an 18-year-old gunman in Munich, authorities have said.
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The youth was under investigation for possibly having failed to report the plans of Ali Sonboly, who later shot himself, and may have played a role in a Facebook posting that invited people to a meeting near Munich train station, a police statement said on Sunday evening.
“There is a suspicion that the 16-year-old is a possible tacit accomplice to [Friday’s] attack,” it said.
Earlier, investigators said that the gunman spent more than a year planning the attack and was able to buy a handgun on the dark web, an area of the internet that allows users to remain anonymous and is often used for illegal purposes. Police came to its conclusion after observing chat messaging history on the gunman’s computer.
Bavarian investigator Robert Heimberger said Sonboly had visited the scene of a school shooting in the German town of Winneden in 2009, when Tim Kretschmer, 17, killed 15 people at his former school before fleeing and killing himself. Sonboly took photographs of the scene, adding further evidence to the claim by Munich’s police chief, Hubertus Andrae, that the teenager was “obsessed with shooting rampages”.
Investigators found on his computer photos of Anders Breivik, who killed 77 people in Norway in 2011. The Munich gunman planned his attack on the fifth anniversary of Breivik’s shooting and used a similar Glock 17 pistol.
Authorities confirmed that the gunman had written a manifesto before the attack, but did not reveal any details about its content.