"We announced the ability to withhold content back in Jan (January)," Twitter´s chief lawyer Alex Macgillivray said in a message posted on the website.[break]
"We´re using it now for the first time re: a group deemed illegal in Germany."
In a separate tweet, Macgillivray posted a link to a message from the police in the northern German state of Lower Saxony asking Twitter to block the account of Besseres Hannover, a far-right outfit which was outlawed last month.
The account is still visible on Twitter with the handle @hannoverticker and calling itself "the national information portal from Hanover".
But no message since the date of the ban, September 25, is visible in Germany, and the group´s website has also been blocked or deleted.
Prosecutors in Lower Saxony have launched a probe against around 20 members of Besseres Hannover on charges of inciting racial hatred and creating a criminal organisation.
The group is in particular suspected of sending a threatening video to the state´s social affairs minister, Aygul Ozkan, who is of Turkish origin.