Oscar Pistorius in court: On Tuesday, the prosecution asked why a burglar would lock oneself in a bathroom. Items found in Pistorius' home suggest Steenkamp intended to stay the night.

She had an overnight bag and her iPad, a South African official familiar with a case said Monday.

The 29-year-old model was alive after she was shot, and Pistorius carried her wounded body downstairs, said the official, who was not authorized to release details to the media.Police were alerted to the shooting by neighbors, and residents had "heard things earlier," spokeswoman Denise Beukes said.

A police spokeswoman said there had been "previous incidents" at the home, including "allegations of a domestic nature." They did not detail what those may been.

Detectives are investigating a blood-stained cricket bat in the home, Johannesburg's City Press newspaper reported, and are trying to determine whether it was used to attack Steenkamp, if she used the bat in self-defense, or if Pistorius used it to try to break down the bathroom door.

Pistorius, 26, has rejected the murder allegation "in the strongest terms," his agent said in a statement. His defense attorney argued Tuesday that the incident was not premeditated, and that Pistorius has no prior convictions. More