Rob Packham is expected to take the stand in his defence when his murder trial resumes in the Western Cape High Court next month.
He has pleaded not guilty to the murder of his wife, Gill, and a charge of obstruction of justice.
Her charred remains were found on February 22, 2018, in the boot of her burnt-out car at the Diep River train station in Cape Town after the fire was extinguished.
Advocate Craig Webster, for Packham, indicated this week that he would call Packham after the recess.
The State closed its case and Webster called his first witness, Warrant Officer Steven Young, on Tuesday.
Young is stationed at Diep River police station and has been a police officer for 34 years.
Why alleged wife killer Rob Packham feels his bail should not have been cancelled
Young replied that they would initial any changes before he signed the document. If he had already signed, they would add a supplementary statement.
He said he had not seen a supplementary statement for Thomas.
"It would most probably be noted in the investigation diary of the case docket."
Under cross-examination, he confirmed to prosecutor Susan Galloway that he regularly commissioned statements for his colleagues.
Asked if there was anything out of the ordinary with the way in which Thomas' statement was commissioned, he replied: "Not to my knowledge."
The trial was postponed until April 15.
Packham, who remains in custody, was seen talking with his daughters for a while before being led away by a police officer.