Information obtained from the boy's co-accused Chris Mahlangu shortly after the crime was, however, admissible, Judge John Horn found in the High Court sitting in Ventersdorp.

The evidence excluded related to the minor's pointing out of the crime scene after the murder and a statement he made in this regard.

On the information given by Mahlangu, the judge said: "The pointing out by [Mahlangu] and the statement from the pointing out for accused one [Mahlangu] are admitted as evidence."

Mahlangu and the minor are charged with beating Terre'Blanche to death in his farmhouse outside Ventersdorp in North West in April 2010.

Both have pleaded not guilty to murder, housebreaking, and robbery with aggravating circumstances. Mahlangu claims he acted in self defence. The teenager has denied involvement in the crime.

The defence claimed that information gathered from the pair shortly after the crime was inadmissible, prompting a trial within a trial on the validity of the evidence.

The main trial resumes on Thursday morning.

The matter was not argued before the court on Tuesday because defence lawyer Kgomotso Tlouane was ill. Instead, the legal teams for the accused and the State exchanged written heads of argument.

These were handed to Horn on Wednesday morning for his consideration.