As you know, some of the camps are in the low lying areas and the most flood-prone districts are Swabi, Mardan,Nowshera and Peshawar.

VOA: standard.2009.07.04

In January, a policeman was killed in a similar attack in the town of Swabi.

BBC: Pakistan 'policeman killed' guarding anti-polio worker

On 1 January seven charity workers, six of them women, were shot dead in the Swabi area.

BBC: Pakistan 'policeman killed' guarding anti-polio worker

Seven other charity workers were killed in January in the Swabi area - it is not clear if they were targeted because their charity offered vaccinations or education for girls.

BBC: Polio workers in Pakistan