A police official told the Associated Press that a suicide bomber killed two people at the entrance of the US embassy in Ankara, Turkey.
Turkish commercial station NTV said two security guards at the entrance were killed.
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The government is encouraging motorists to think twice about buying diesel cars in a bid to improve air quality.
Atlantic frontal systems spread rain in from the northwest on both weekend days. Windy - with gales across the north and west but mild.
The band announced at a free concert on Friday that they would take over the event's Pyramid stage on Saturday June 25.