Officers from a Bavarian police unit Hendrik Schmidt/ AFP

One of four police officers shot by an alleged far-right Reichsbürger extremist has died from his injuries, Bavarian officials said.

The 32-year-old officer was one of four injured when the man opened fire as police raided his property in Georgensgmünd, Bavaria yesterday (19 October) morning.

"He is actually dead," a police spokesman said, reported Zeit online.

Another officer was injured in the arm during the attack, and two other officers slightly injured by shattered glass in the raid. The 49-year-old shooter, who was wearing a protective vest, was also slightly injured.

The suspect is believed to be a member of the Reichsbürger movement, which refuses to acknowledge the authority of the post-Second World War German state. Reichsbürger groups have been linked to neo-Nazi organisations.

Police raided the flat to seize the man's 31 firearms, Bavarian officials said. He had earlier rejected a police request to inspect the weapons, declaring himself a Reichsbürger who did not acknowledge state laws.

"I am appalled by this case," said Bavaria's interior minister Joachim Herrmann, adding that the Reichsbürger movement in Bavaria should now be subjected to a "thorough review".