In October 2013, blood samples from twenty Belgian pigeons were sent by the Pigeon Fanciers Association to South Africa for testing. This was the result of an exchange visit by the association to the National Horseracing Authority of Southern Africa. While tests in Belgium had not found traces of any drugs the South African laboratory discovered that six samples contained unusual substances. Five samples were found to include traces of acetaminophen (paracetamol), a widely used over-the-counter analgesic (pain reliever) and antipyretic (fever reducer). The sixth sample was erroneously reported in the press as having shown indications of cocaine use, but the lab reported that it was indications of caffeine usage. As the samples were sent anonymously no action could be taken against the owners of any of the birds.