**At least 10 people have been killed in an explosion at a political party rally in north-west Pakistan, police say.**A police official told Reuters news agency the blast had been caused by a suicide bomber who blew himself up at the gates of the venue.
The party targeted, the ethnic Pashtun Awami National Party, heads a coalition in North West Frontier Province.
The incident took place in Lower Dir district, scene of a major offensive against the Taliban last year.
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