Jan Ullrich

According to German news agency sid, the Bonn public prosecutor Fred Apostel has confirmed that comparisons with a DNA sample taken from Ullrich's saliva showed "without a doubt" that nine bags of blood seized by the Guardia Civil in Madrid last year belonged to Jan Ullrich.

"We found nine blood bags that we could compare with the DNA probes. This shows that blood bags were stored there (in Fuentes's offices)," Apostel told n-tv.

Like many of the riders implicated Operacion Puerto last summer, Ullrich was not allowed to start the Tour de France and was suspensed by his T-Mobile team. After failing to find a team for the 2007 season, Ullrich announced his retirement from cycling last month. He has always denied doping or links to Dr Fuentes. His lawyer immediately called the results of the DNA tests into question.

?After the irregularities of the Spanish investigation and at the UCI (International Cycling Union) it is perfectly possible that the apparent discovery is the result of manipulation," Johann Schwenn said in a statement on Ullrich's official website (www.janullrich.de).

Thank you for reading 5 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

Founded in 1891, Cycling Weekly and its team of expert journalists brings cyclists in-depth reviews, extensive coverage of both professional and domestic racing, as well as fitness advice and 'brew a cuppa and put your feet up' features. Cycling Weekly serves its audience across a range of platforms, from good old-fashioned print to online journalism, and video.