There have been questions as to whether more than 10,000 staff G4S, the company in charge of Olympic security recruitment must train will be ready in time for the Games.
G4S Managing Director of Global Events, Ian Horseman Sewell, told ITV News' UK Editor Keir Simmons:
"I can’t tell you categorically because unforeseen events can happen but I can tell you we are on plan".
More top news
The singer, 31, said on Twitter that she and her partner Jonathan Powell were grieving their loss.
A fine evening ahead to the south with some late sunshine in places.
Prince Charles and the Duchess of Cornwall have visited Manchester Arena, the site of a suicide bombing in May which left 22 people dead.