German publisher halts sale of top author’s books after leak reveals he received €600,000 from Putin ally

Broadcaster NDR launches investigation after Hubert Seipel admits receiving support for work on two books on Russian leader

A German publisher has announced a stop to the sale of books authored by a leading journalist and Russia expert after an investigation showed he had received at least 600,000 (522,000) in undisclosed offshore payments from companies linked to an oligarch close to Vladimir Putin.

Hubert Seipel, an award-winning film-maker and author, admitted receiving support for his work on two books charting the Russian leader's rise to power and offering portrayals described as sympathetic to him.