Approached at a May conference in New York, he refused to answer questions about his recommendations of Mega and Pinetree.
He refused to answer journalists' questions as he arrived back in the UK, and his only comment came when a photographer walked into a pillar, injuring his nose and mouth.
He has refused to answer whether he would play king-maker and what conditions he might insist on.
Once inside the office Mr Abdel-Fattah tweeted that he had refused to answer Mr Abdullah's questions.
BBC: Egypt blogger Alaa Abdel-Fattah questioned over clashes
But in a follow up, Mr Mearns wrote to Mr Gove saying he had "refused to answer questions about an alleged breach of the code of conduct for special advisers".
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"After asking Hammer who the registered owner was he became very argumentative and refused to answer the officer's questions, " police spokesman Herb Walters wrote Saturday evening in an e-mail to CNN.
He got into a shouting match with a fan during the playoffs, and he never suffered the media, repeatedly refused to answer questions.
However, he refused to accept "no" for an answer.
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Rees refused to answer police questions when he was arrested but, on being told Mrs Parsons was terminally ill, he offered to show police where he had taken the rings to be sold.
Ambitious politicians are already well advised not to have too much fun at university (David Cameron, Britain's likely future prime minister, refused to answer questions about whether he had taken drugs while at Oxford, for instance, and when a photo was circulated showing his membership in a toffee-nosed dining club with a reputation for smashing up restaurants, it was quickly suppressed).
He was arrested when the case file was reviewed by the Historical Enquiries Team but during police interviews he made a brief statement denying involvement and then refused to answer any questions put to him.
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However, in an answer to reporters' questions, he refused to rule out the possibility.
Mr Kean denied murdering Mrs Methven but replied "no comment" when asked if he had been in her house and then refused to explain that answer.
The businessman first told police he had bought the books second hand, but then later refused to answer any questions as the bigger picture emerged.
"In general I refused to answer all the questions because of partiality of the prosecutor general, " he posted.
BBC: Egypt blogger Alaa Abdel-Fattah questioned over clashes
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