Olympic champions Mo Farah, Rafael Nadal and Justin Rose were among athletes targeted yesterday in the latest leak of confidential medical documents that the world anti-doping agency (WADA) says were hacked by a Russian cyber espionage group.

Britain’s Farah became only the second man to retain the 5,000 and 10,000 metres Olympic titles at the Rio de Janeiro Games last month while compatriot Rose won the first gold medal in golf for 112 years.

Spaniard Nadal, a 14-times tennis grand slam winner, won Olympic men’s doubles gold with Marc Lopez.

WADA has said it believes the hackers, named as APT28 and Fancy Bears, gained access to its anti-doping administration and management system (ADAMS) via an IOC-created account for the Rio Games.

Documents relating to Farah, and published on the fancybear.net website, showed that the distance runner had no active Therapeutic Use Exemptions (TUEs) at the time of the Olympics.

He received intravenous infusions of saline solution, morphine sulphate and vicodin administered orally during a period in hospital between July 3-5, 2014 when he had collapsed after a training run.

Prior to that, he was given a TUE for an 80mg dosage of the corticosteroid triamcinolone in October 2008.

Rose had authorisation for daily dosages of the anti-inflammatory drug prednisolone between May this year and June 20.

The documents relating to Nadal, who was out for two months with a wrist injury, showed exemptions in 2009 and 2012.