Gerrie Nel, the chief prosecutor in the Oscar Pistorius murder trial, has formally requested that the accused undergo a psychiatric evaluation after a witness testified that he had an anxiety disorder.
The expert witness, who took the stand on Monday, claimed that she had diagnosed the Paralympic gold medal winner with the disorder and insisted it could have played a role in the shooting of Reeva Steenkamp.
Mr Pistorius denies intentionally murdering his girlfriend at his home on February 14 last year, claiming he mistook her for an intruder, who had barricaded themselves in the bathroom.
The prosecution acknowledged that a psychiatric test would delay the trial further.
Judge Thokozile Masipa adjourned following the request and said she would announce a decision on the matter on Wednesday morning.
Mr Nel questioned the validity of Dr Merryll Vorster's testimony and also the motives behind the defence's decision to call her to the stand.
He also tried to ward off any attempt from the defence to insist that the court should treat Mr Pistorius favourably because of his potential condition.
The double-amputee's fragile mental state, fragility and disability has been at the centre of Mr Pistorius' lawyer, Barry Roux, since the start of his defence.