Prosecutors in South Australia are reconsidering a proposed plea arrangement for a 74-year-old man accused of sending a series of harassing and allegedly menacing emails to federal parliamentarian Matt Burnell.

Ronald Dean Munro, who lives in Elizabeth South in Adelaide’s northern suburbs, appeared in the Adelaide Magistrates Court on Wednesday, 21 October 2026. He had been expected to enter pleas to 10 charges involving the alleged misuse of a communications service to send harassing or offensive messages.

Details of the allegations According to court documents reported by the ABC, the alleged emails were sent to Burnell’s official parliamentary email address between May 2023 and December 2025.

The allegations cover 10 separate dates. Two emails were allegedly sent in 2023, on 2 May and 30 November. Three more were allegedly sent during 2024, on 12 May, 4 August and 20 August.

The remaining five emails were allegedly sent in 2025, on 6 June, 17 June, 14 July, 15 July and 31 December.

The charges concern whether the communications were of a kind that reasonable people would consider menacing, harassing or offensive in the circumstances. The precise content of the emails was not detailed in the ABC report.

Why the proposed plea arrangement changed The court was told that prosecutors had previously been negotiating an arrangement that would consolidate the charges. However, the Commonwealth prosecution decided to reconsider its position and said it could no longer maintain the agreement previously discussed.

The change came two days after a separate incident involving federal MP Helen Haines in Wangaratta, Victoria. The prosecutor did not provide further details about the revised position beyond explaining that the proposed agreement was being reconsidered.

Munro’s defence lawyer, James Caldicott, told the court he had been seeking instructions from his client about the proposed deal when he learned of the prosecution’s decision. He indicated that the case was now likely to proceed to trial.

What happens next? Munro did not enter a plea during the hearing. Outside court, he told reporters he intended to plead not guilty. The matter was adjourned for two weeks.

The Australian Federal Police declined to comment further because the case remains before the courts. When Munro was arrested in February, the AFP said it took allegations affecting the safety and security of Australian parliamentarians seriously.

The case highlights the legal distinction between political expression, which is protected, and communications that may cross the threshold into criminal harassment or threats. Whether the alleged emails meet that threshold will need to be determined through the court process.