Bavaria's top security official says Germany needs to be able to call upon its military in times of crisis like Friday night's shooting rampage at a Munich mall.

With an eye on the Nazi era excesses, Germany's post-war constitution only allows the Bundeswehr to be deployed domestically in a national emergency.

But state Interior Minister Joachim Herrmann told Welt am Sonntag newspaper Sunday the regulations are obsolete, with "an absolutely stable democracy in our country."

"In extreme situations — like for example the terrorist attacks in Paris and Brussels — we should also be able to call upon the Bundeswehr in Germany," he said. "It makes no sense to say we categorically reject that."

An 18-year-old with a pistol killed nine and wounded dozens Friday before taking his own life.