An ITV spokeswoman said the broadcaster was not in a position to comment, but it is understood Roache will not appear in the long-running soap while investigations continue.
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The Silverton family are celebrating the birth of the first baby girl in a century, breaking a streak of 21 boys over four generations.
The 100 leaders did not agree on concrete proposals, but the meeting has raised hopes for concrete international agreement next December.
The speech was OK, passionate at times and certainly well received, but did not display the passion of past speeches.