A court in Germany has delayed the high-profile trial of a neo-Nazi and four suspected accomplices over a seven-year killing spree that sent shockwaves through the country.

Beate Zschaepe is the sole survivor of a far-right group suspected of killing eight Turks, a Greek and a policewoman between 2000 and 2007.

The group's existence only came to light by chance after her suspected co-conspirators Uwe Mundlos and Uwe Boenhardt died in an apparent murder-suicide two years ago.

The Munich court said Monday it was postponing the trial's opening from Wednesday until May 6 after a ruling by Germany's highest court that there must be sufficient seats for foreign reporters at the trial.

The court says a new accreditation process will take too long to begin the trial on time.