A man accused of selling a gun and ammunition to the teenager who shot dead nine people at a Munich shopping centre has been arrested in Germany.

Police detained the 31-year-old in the western city of Marburg on suspicion of selling the weapon to Munich killer David Ali Sonboly on the dark web.

The suspected weapons dealer is alleged to have met the 18-year-old German-Iranian in Marburg on two occasions.

German media reported the man met Sonboly firstly to sell the weapon and then, four days before the massacre, to sell the bullets.

Munich Killer Bought Gun On Dark Web

He was caught during a sting operation which saw police set up a fake weapons deal.


"The 31-year-old man was arrested as he was handing over a shotgun," police said.

Police began tracking the suspect while investigating two unrelated cases of illegal dark net arms transactions.

Details Of Munich Attack Victims Emerge

During the investigation the man allegedly revealed he had sold the Glock 17 pistol to the Munich killer.

The 22 July shooting began in a McDonald's restaurant before Sonboly opened fire at a nearby shopping mall.

Nine people were killed and another 35 injured. The teenager then shot himself dead.

Investigators say he was treated for mental health problems including depression and anxiety prior to the shooting.