The court is being shown a floor plan of Oscar Pistorius' home. Prosecutors are trying to reconstruct events.
Pistorius' lawyers said he went to the bathroom without his prostheses, and that the angle of bullets is significant. An investigator says it seemed that the shots were fired "downwards".
Once you're in the bathroom, "there's no way out," says investigating officer Hilton Botha.
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It will be a mainly dry but chilly start across the UK with a few showers across northern Scotland and northwest England.