Correctional Services said that “matters are under control” at Johannesburg’s Sun City Prison on Wed.
Ben Gollings landed the last kick conversion to give England a 19-17 victory over hosts New Zealand in the Wellington Sevens final.
England clawed their way from 17-0. Isoa Damudamu scored at the death to level and allow Gollings - the IRB Sevens circuit's all-time leading scorer - to convert for the win.
It was England's first tournament win since 2006.
Meanwhile Wales' hopes of a rare Cup semi-final appearance were dashed by Kenya, who won their quarter-final 10-7.
But having claimed the prized scalp of New Zealand on day one, Wales added Fiji to the list with a 14-12 Plate semi-final win before losing the final 26-12 to South Africa.
Scotland won the Shield after overcoming the disappointment of losing 22-12 to Australia in their Bowl quarter-final. - BBC