Kevin Lerena gives evidence on Wednesday at the trial in Pretoria of athlete Oscar Pistorius, accused of the murder of Reeva Steenkamp. Lerena says Pistorius fired a shot in a Johannesburg restaurant and asked another friend to take the blame. He says the incident happened a month before Pistorius shot his girlfriend Steenkamp, and says he wants to counter false claims Pistorius had shot him in the leg