German police are asking the public for information about a trio suspected of a string of racist muders.

Beate Zschaepe is the only one of the three still alive. She is now in custody.

Autorities displayed photographs of the trio and firearms said to belong to the so-called ‘Nationalist Socialist Underground’ group. The neo-Nazi cell is blamed for killing at least nine Turkish and Greek immigrants and a policewoman between 2000 and 2007.

The group was discovered only by chance when two

members apparently committed suicide. Zschaepe, who police say set a caravan and house on fire in the eastern German state of Saxony, turned herself in.

As police seek evidence of any links between the group and Germany’s far-right NPD party, calls have multiplied for the party to be banned.