Governor of Borno State: 'Reports abducted girls were sighted'

Kashim Shettima, the Governor of Borno State in Nigeria, has told the BBC he has information about the whereabouts of 200 missing schoolgirls.

Security forces are still searching for the missing students, who were abducted by Boko Haram Islamist militants on 14 April.

World Affairs Editor John Simpson reports from Borno.