Germany will deploy extra police to protect mosques, railway stations, airports and other sensitive sites because of a “very high” far-right threat following the Hanau killings, the interior minister says.
Horst Seehofer said he had agreed the measures with regional leaders, to prevent any copycat attacks.
Prosecutors say the suspected gunman, now dead, was “deeply racist”.
Nine people were killed in shisha bars in the western city on Wednesday.
“The security threat from right-wing extremism, anti-Semitism and racism is very high,” Mr Seehofer said. He called it “the biggest security threat facing Germany”.
Muhammed B, a wounded survivor, described from his hospital bed how the gunman took careful aim at the victims in the Arena Bar & Cafe.
“Everyone he saw, he just shot them straight in the head. He laid down, then he fired at all of us. I hid behind a wall, and as I was moving to hide he shot me in the arm,” he told a Turkish TV interviewer.
Over 950 refugees from Jordan and Lebanon returned to Syria within 24 hours
“It was a bloodbath… We were all lying on top of each other. The guy lying under me had a hole in his neck, he said ‘I can’t breathe, I can’t feel my tongue’,” Muhammad recalled through tears. He said he told the young man to recite a final prayer, which he did.