Tuesday 12 May at 18:00 : May 12 (GMM) Michael Schumacher was injured more seriously in his February motorcycling crash than he let on, the authoritative Swiss newspaper Blick claims

While testing for this year's German Superbike series at the Cartagena track in Spain, the retired seven time world champion fell at high speed and was hospitalised

Schumacher, 40, claimed that hospital checks showed no significant injuries, but Blick insists the German sustained severe concussion and two broken ribs

On his latest visit to the F1 paddock last weekend, meanwhile, it was rumoured that Schumacher - still unable to ride a bike or even fully turn his head due to a stiff neck - may also have fractured a vertebrae in the fall

His spokeswoman Sabine Kehm said: "We do not take part in speculation."nnIt is rumoured that Schumacher still receives treatment for his injuries in the Bad-Nauheim hospital, but the Sportklinic's Dr Johannes Peil also refused to comment

And spokeswoman Kehm insisted: "Once he is again fully fit, he would like to ride motorcycles again."n