CAIRO (AFP) - Egypt's Muslim Brotherhood denied that its supreme guide, Mr Mohamed Badie, has been detained, with a spokesman for the Islamist movement telling AFP he would address a rally on Friday of supporters of ousted president Mohamed Mursi.

Security forces said on Thursday that Mr Badie had been arrested by military police at the request of the prosecution for inciting the killing of protesters.

But Brotherhood spokesman Ahmed Aref said Mr Badie would speak at a pro-Mursi demonstration at around 1630 GMT on Friday (12.30am on Saturday in Singapore).