South Africa's Anton Haig, Singapore's Mardan Mamat and Rafa Echenique of Argentina share the first-round lead.

BBC: O' Malley shares lead in Munich

The selected districts were: Chitral, Swat, Bannu, Charsadda, Mansehra, Mardan and Peshawar.

UNESCO: CULTURE

The project was formally launched in Mardan and Peshawar in March 2008 and May 2008 respectively following its commencement in Chitral and Mansehra in 2007.

UNESCO: CULTURE

He was shot while guarding the main gate of a house in Khao Killay village in Mardan district as a worker administered the vaccine inside.

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

Also interesting is the scene of Mr Libbi's capture, in Mardan (see map in article), in North West Frontier Province, close by Pakistan's border with Afghanistan.

ECONOMIST: Pakistan nabs a key al-Qaeda fugitive

Another officer was wounded in the attack in Mardan district, the latest in a series of attempts on the lives of polio workers and their escort teams.

BBC: Pakistan police officer guarding polio workers killed

Our correspondent says that the overwhelming majority of displaced people either live in government buildings or schools, or are being looked after by what are called "host families" in Swabi and Mardan.

BBC: Pakistan displaced 'can go home'

About 260, 000 people have been living in 21 refugee camps in neighboring Mardan, Swabi, Nowshera, Peshawar and Charssada districts, but the United Nations High Commissioner for Refugees say the "vast majority" of internally displaced Pakistanis have been staying with host families, rented houses or in schools.

CNN: Despair, devastation in war-ravaged Swat Valley