Oscar Pistorius' agent testifying at athlete's sentencing hearing

Oscar Pistorius leaves the high court in Pretoria, South Africa, Monday, Oct. 13, 2014. = Pistorius faces sentencing this week in a South African court after being convicted of culpable homicide for killing girlfriend Reeva Steenkamp. Judge Thokozile Masipa found Pistorius not guilty of both premeditated murder and murder in his killing of Steenkamp in the predawn hours of Valentine's Day at his home last year. (AP Photo/Themba Hadebe) (The Associated Press)

Oscar Pistorius in court Monday, Oct. 13, 2014 to face sentencing for the shooting death of his girlfriend Reeva Steenkamp. South African judge Thokozile Masipa has wide latitude in deciding the sentence after several days of legal arguments and testimony that begin Monday. Last month she convicted the double-amputee runner of culpable homicide, or negligent killing. Sentences for such a crime can range from a suspended sentence and a fine to as many as 15 years in prison. (AP Photo/Werner Beukes. Pool) (The Associated Press)

Oscar Pistorius rubs his eyes as he sits in court as the sentencing process entered a second day, Pretoria, South Africa, Tuesday Oct. 14, 2014. Pistorius was being portrayed as a "poor victim" ahead of his sentencing for killing girlfriend Reeva Steenkamp, the chief prosecutor said Tuesday. (AP Photo/Themba Hadebe, Pool) (The Associated Press)

A South African judge is hearing testimony on the second day of Oscar Pistorius' sentencing hearing before deciding what punishment the athlete will receive for killing girlfriend Reeva Steenkamp.

Pistorius' agent, Peet van Zyl, was testifying Tuesday after being called as a witness by the defense.

Judge Thokozile Masipa will decide on Pistorius' sentence after he was found guilty last month of culpable homicide, or negligent killing, for the shooting death of Steenkamp.

Culpable homicide has no minimum sentence in South Africa, and Pistorius could receive a fine and a suspended jail sentence or as many as 15 years in prison for shooting Steenkamp through a toilet door in his home last year.

Prosecutors will also call witnesses during the hearing, which is expected to last around a week.