Updated

The son of former IAAF president Lamine Diack and two Russian officials have been banned from track and field for life after an ethics investigation into extortion and doping cover-ups.

The former director of the IAAF's anti-doping department, Gabriel Dolle, received a five-year ban from the ethics commission of the International Association of Athletics Federations.

Banned for life were Papa Massata Diack, who worked as an IAAF consultant; former Russian athletics federation head Valentin Balakhnichev; and Alexei Melnikov, former head coach of Russia's race-walking and long-distance running programs.

The sanctions centered on the case of Russian marathoner Liliya Shobukhova, who was allegedly extorted out of hundreds of thousands of dollars to avoid a doping ban before the 2012 London Olympics.