Pistorius family lawyer Kenny Oldwage has said: "There is no doubt that Carl is innocent and the charge will be challenged in court. Carl deeply regrets the accident.
"Blood tests conducted by the police at the time proved that he had not been under the influence of alcohol."
More top news
Bodies are being buried in backyards and overwhelming morgues as officials try to find another plot of land to lay them to rest.
Authorities have warned that the death toll is likely to rise as much of the building is yet to be searched.
The PM will sound out the possibility of new free trade agreements with Gulf states for once the UK has left the EU.