"Police are investigating a theory Pistorius, 26, killed Ms Steenkamp in a fit of “roid rage” after banned steroids were found at his luxury home in Pretoria.
Officers demanded he be tested for the substances, while detectives also reportedly discovered a blood-stained cricket bat at the house.
Ms Steenkamp, a law graduate, is said to have suffered skull “crush” injuries as well as being shot four times in the pelvis, chest, head and hand. Police believe she was shot in the hip in the master bedroom after finding a bullet cartridge there, before fleeing to lock herself in the bathroom.
Bullet wounds to the top of her head suggest the next three shots hit her through the door as she sat doubled up in pain on the toilet with her hands raised instinctively to protect herself.
Phone records are also being checked after reports suggested the runner could have flown into a rage when Ms Steenkamp received a late-night text from South African rugby star Francois Hougaard.
They were said to be close before she and the “Blade Runner” started dating in November, with him reportedly unhappy that they remained friends.
Hougaard, 24, has insisted the “whole sad ordeal” of her death had nothing to do with him.
As police sealed off the house, Pistorius wept down the phone to best friend Justin Divaris, 27, telling him: “There has been a terrible accident, I shot Reeva. I’ve killed my baba. God take me away.” Pistorius denies murder and claims he mistook his girlfriend for an intruder.
His father Henke said: “There is something fundamentally wrong with our society. We build people up into heroes only to take great glee in breaking them down.”
The world is watching South Africa as the Oscar Pistorius trail began today ….
I'm glued and desperate to hear all the facts…
channel 199 DSTV