Protests in Egypt against President Mohamed Mursi on Friday ended with nine people being shot dead.
Eight of the dead, including a policeman, were shot dead in Suez, where Egyptian troops are now deployed.
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Police investigating the disappearance of a British toddler in Germany more than 35 years ago have released an image of a suspect.
Lord Stevens said drones should be prohibited near sensitive sites like airports.
The strike action was due to begin on Wednesday.