American cyclist Lance Armstrong was rushed to a hospital in Spain today after crashing during a cycling race there.  Armstrong was taken to the hospital by ambulance and likely broke his collar bone.

This update just made by CNN:

Armstrong reportedly fell around 20 kilometers from the finish and was seen pointing to his collarbone, CNN’s Al Goodman reported from northern Spain.

Organizers said Armstrong was taken to hospital at Palencia and had withdrawn from the race.

The 37-year-old Armstrong, who ended a three-year retirement to return to competitive cycling in January, walked to the ambulance unaided, television pictures from the scene showed.

A group of 15 to 20 riders fell, according to Bartosz Huzarski, a cyclist racing for the Italian team ISD. Huzarski, who saw the fall, said he did not know what had caused it. Only Armstrong appeared to indicate he was hurt, the Polish cyclist said.

Armstrong and his Astana team are in Spain competing in the Vuelta of Castilla and Leon race.  Today was the first day of the five stage race.

Updates: Lance has in fact fractured his collarbone.