Pretoria, South Africa (CNN) -- Model Reeva Steenkamp was shot four times through the bathroom door at the home of Olympian Oscar Pistorius, a South African official familiar with the case told CNN on Monday.
She was alive after she was shot and was carried downstairs by Pistorius, said the official, who was not authorized to release details to the media.
The details are the latest to emerge in the shooting death that has roiled the nation, and left South Africans asking what went so terribly wrong inside the upscale Pretoria home of the man nicknamed "Blade Runner" for his lightning-fast prosthetic legs.
The official, who spoke on condition of anonymity, said there were indications the 29-year-old model intended to stay the night at the house: She had an overnight bag and her iPad.
Authorities have released little about a possible motive in the Valentine's Day shooting, while local media have reported that Pistorius had mistaken his girlfriend for an intruder. South African authorities have stressed that the scenario did not come from them, and said there was no evidence of forced entry at the home.
Police have charged Pistorius with murder, and he will appear in court Tuesday for a bail hearing. South African prosecutors have said they intend to upgrade the charge to premeditated murder, but have not released further details.
Pistorius, 26, has rejected the murder allegation "in the strongest terms," his agent said in a statement.