Barry Steenkamp says his world fell apart after Reeva's murder

Reeva Steenkamp’s father gives emotional testimony on how he found out about his daughter’s 2013 death.

Barry Steenkamp testifies in the North Gauteng High Court on 14 June 2016. Picture: Pool.

JOHANNESBURG - Reeva Steenkamp's father has broken down in tears while testifying in aggravation of sentence in Oscar Pistorius's murder case.

Barry Steenkamp is the first witness to be called by the State.

It's the first time he's testified since his daughter's murder in 2013.

Pistorius will be sentenced again after the Supreme Court of Appeal (SCA) found him guilty of murder and not culpable homicide, as Judge Thokozile Masipa had previously found.

Steenkamp has described in detail how he found out about his daughter's death.

He says Reeva helped the family financially, and was kind-hearted.

He says on 14 February 2013, his world fell apart.

"I got a phone call from June, I couldn't really understand what she was so upset about. She was screaming and shouting. At first I thought most probably one of our animals had got killed. She said 'come home immediately', I dropped everything and on my way home I tried to fathom what she had said and I realised that she mentioned Reeva."

He says he didn't know his daughter was in a relationship with Pistorius.

The second day of sentencing proceedings was dominated by her father's emotional testimony.

Barry told the court that he has not yet forgiven the former athlete for murdering Reeva, and he should pay for his crime.

He says while his wife June has, as a Christian, forgave Pistorius, he has not been exonerated.

Steenkamp says he believes Reeva and Pistorius were involved in a fight before he shot her.

He says he visualises the crime scene and imagines the fear and pain his daughter was in before she died.

He has confessed to harming himself in the belief that he could experience the pain his daughter felt.

WATCH: Barry Steenkamp: 'Oscar must pay'