Double Olympic champion Mo Farah has announced to pull out of the IAAF Birmingham Diamond League just hours before the meeting kicks off at the Alexander Stadium at Britain's second largest city.

He did not give the details for his withdrawal but it is understood that the recent doping allegations made to his coach Alberto Salazar is the reason.

The 32-year-old has been angry after his name was linked with "doping scandals" in the Panorama program broadcast on BBC One on Wednesday.

It was alleged his coach Salazar had been involved in doping by giving banned drugs to United States 10,000m record holder Galen Rupp in 2002 when the athlete was 16 years old.

Rupp is still Farah's training partner.

Farah, who won 5,000m and 10,000m gold at the 2012 London Olympics, said on Saturday that the allegations against his coach had affected his preparation for Sunday's race.

"My reputation is getting ruined. You guys are killing me," he told reporters. "I'm a clean athlete. I'm against drugs 100% and believe anyone caught should be banned for life."