Excerpt:
The UK's most senior Muslim police officer is in the final stages of preparing a racial discrimination case against Scotland Yard.
Assistant Commissioner Tarique Ghaffur has had legal documents drawn up accusing colleagues of a catalogue of victimisation, bullying and harassment.
Some of the allegations refer directly to the actions of Commissioner Sir Ian Blair and Police Authority chair Len Duvall, sources said.
One senior colleague said relations between Mr Ghaffur and Sir Ian were so bad that the two men will not speak to each other.
Mr Ghaffur, who is responsible for security at the 2012 Olympics, has employed a senior barrister to draw up legal papers.