Charleston killer 'had been inside for an hour'

Police in the United States have been searching for a white gunman who killed nine people at a historic African-American church in Charleston in the US state of South Carolina.

Police say the killer had spent an hour in the church at a prayer meeting before opening fire on three men and six women.

Detectives say they are treating the attack as a hate crime and they have warned people not to approach the suspect who is white and in his 20s.

Richard Galpin reports.