Sunday 7 June 2015 10:22, UK
Mo Farah has withdrawn from his intended appearance at the Diamond League meeting in Birmingham because of stress.
Farah was due to race in front of his home fans over 1,500 metres, but he has decided not to take part at the end of a week when his coach Alberto Salazar has made front page headlines.
Double Olympic champion Farah appeared angry at a press conference on Saturday where he was questioned about doping allegations levelled at Salazar.
Farah was upset his name had "been dragged through the mud" after Salazar was accused of doping in the BBC Panorama documentary 'Catch Me If You Can', which aired on Wednesday.
No suggestions were made of Farah being implicated and the 32-year-old said on Saturday he had no intention of leaving Salazar, who he has been working with in Oregon since early 2011.
UK Athletics also said there were 'absolutely no concerns' over Salazar's working relationship with Farah.
A statement from Farah read: "This week has been very stressful and taken a lot out of me.
"I have not been able to focus properly on today's race and after the events of the last few days feel emotionally and physically drained.
"I want to run well in the IAAF World Athletics Championships in Beijing and have decided it is better for me to go back to the US, seek answers to my questions and get back into training.
"I apologise to the people who bought tickets to come and watch me race and ask for your understanding at this time."
