Lampre rider Miguel Ubeto has been provisionally suspended after he tested positive for a banned substance.
The world cycling governing body UCI have announced that the Venezuelan rider has been issued with the provisional ban after the substance was detected from a urine sample.
It has been confirmed that the substance was found in Ubeto's system following an out-of-competition test taken on April 16.
The drug is said to be GW1516 sulfone, which has been banned by the World Anti-Doping Agency since 2009.