The father and son who travelled from Sydney to the local region and sparked a lockdown, have pleaded guilty to most of the charges they face.

Read more Covid news: Covid update: 12 new cases in the local district

Neither Zoran Radovanovic, 52 and his 19-year-old son Kristian appeared in Lismore Local Court this week on Monday, when their cases were mentioned.

Instead of personally appearing, Mr Radovanovic’s lawyer emailed through Mr Radovanovic's guilty pleas to four charges of failing to comply with electronic registration (QR codes).

He is also charged with three counts of not complying with COVID directions, but as yet he has not entered a plea.

Local police have alleged the pair violated public health orders after going to Byron Bay in late July to look at real estate - and failed to use QR codes to check into venues.

In August, the LGAs of Byron, Richmond Valley, Lismore, and Ballina were all plunged into a seven day lockdown, after Mr Radovanovic tested positive to Covid. He was then treated in Lismore Base Hospital.

The lockdown was then extended, effectively keeping the region in lockdown until September 10.

Zoran’s son Kristian entered guilty pleas to all four charges against him: two of not complying with electronic registration, one of not complying with directions and one of not wearing a face mask in public transport or a taxi.

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Both remain on bail, with the father’s case to be mentioned again at Lismore on November 15 and the son’s matter to be mentioned in Waverley Local Court on November 8.