A soldier helping police quell violence against foreigners in South Africa shot and killed a man, the defence force said today.

Sinn Féin's Martin McGuinness ended a two-and-a-half-day visit to South Africa by paying tribute to the role of the African National Congress government in encouraging parties in Northern Ireland.

Johannesburg police are investigating if there is a link or coincidence after a train was robbed at different ends at the same time.