PRETORIA, South Africa —
He criticized Hilton Botha, the previous lead investigator in the case, for not doing more to uncover evidence that the Olympian had violent tendencies.
"There is ample room and ample time to do that by looking at the background of the accused," he said.
But while Nair leveled harsh criticism at former lead investigator Botha for "errors" and "blunders," he said one man does not represent the state's case and that the state could not be expected to put all the pieces of its puzzle together in such a short time.
Anticipating the shape of the state's case at trial, he said he had serious questions about Pistorius' account: Why he didn't try to locate his girlfriend on fearing an intruder was in the house, why he didn't try to determine who was in the toilet and why he would venture into perceived "danger" - the bathroom area - when he could have taken other steps to ensure his safety.
"There are improbabilities which need to be explored," Nair said, adding that Pistorius could clarify these matters by testifying under oath at trial.