**A suicide bomber on a motorcycle has killed six people, including a policeman, in south-west Afghanistan.**The attack in a crowded market in Farah city, capital of Farah province, also wounded 36 people, police said.
Farah, a mainly desert province on the Iran border, has seen a rise in insurgent attacks this year as Taliban have become active in new areas.
The attack comes a day after President Hamid Karzai was sworn in for a second term as the country’s elected leader.
The bomber struck in an area where heavy trucks were being loaded with goods to be taken to the province of Herat, police said.