Botswana votes in closest poll in 48 years

Voters are going to the polls in Botswana in what is expected to be the closest general elections in the world's largest diamond producer.

President Ian Khama's Botswana Democratic Party (BDP), which has governed since independence in 1966, is expected to win a reduced majority.
But it has been battling to gain support in urban areas where opposition parties have made recent inroads.
Botswana is seen as one of Africa's most stable and democratic countries.
The sparsely populated country also protects some of Africa's largest areas of wilderness.
There are three parties competing to win over the 824,000 registered voters who will elect 57 members of parliament.