German officials on Sunday called for the country's gun laws to be reexamined, two days after a German-Iranian teenager armed with a semi-automatic pistol mowed down nine people before turning the gun on himself.
"We must continue to do everything in our power to limit access to deadly weapons," Sigmar Gabriel, Economics Minister and Chancellor Angela Merkel's deputy, told the Funke media group on Sunday.
Interior Minister Thomas de Maiziere said that once it had been determined how the depression-plagued teenager had acquired the pistol, it would have to be "carefully examined whether and to what extent there is a need for legislative action."
Police on Sunday raised the number of people injured in Friday's rampage from two dozen to 35. The toll includes those hurt when panic broke out in the city centre after the shooting at the Olympia shopping mall, a spokesman said.
Officials have confirmed there is no link to Islamist militant networks, and that the 18-year-old shooter was an avid reader of books and articles about mass killings including the Norway attacks, which occurred five years earlier to the day.
Most of his nine victims were teens from Turkish and Kosovar immigrant families.
Witness accounts and smartphone footage of the attack indicate the suspect may have harboured resentment towards foreigners even though he was the German-born son of Iranian asylum seekers.
Police said the alleged shooter, armed with a semi-automatic pistol, apparently tried to lure people to the McDonald's restaurant where many were shot by offering free meals via a fake Facebook offer.
Investigators were still determining his motive, but prosecutors and Interior Minister Thomas de Maiziere said the teenager had been treated for depression and that he may have been bullied by peers.
A search of the suspect's home revealed literature including a German translation of the book Why Kids Kill: Inside the Minds of School Shooters by US psychologist Peter Langman.
Chancellor Angela Merkel expressed her deep sorrow about the shooting after convening the National Security Council in Berlin on Saturday.
Pope Francis on Sunday expressed his dismay about the "terrible act of violence" in Munich.
Holy mass was to be held at Munich's Liebfrauendom Cathedral later on Sunday to commemorate the victims.