A group lobbying to prevent David Bain claiming compensation for the time he spent in jail says it would be wrong for the Government to hand him taxpayer money.
Mr Bain spent 13 years in prison for the 1994 murders of five family members, but was found not guilty at a retrial this year.
The group Justice For Robin Bain has been formed on social networking site Facebook and believes David Bain should not be entitled to any compensation.
Group spokesperson Kent Parker says Justice for Robin Bain is not connected to the case or David Bain's family.
The group contests the view that David Bain's father, Robin Bain, carried out the killings.
Mr Parker says he never knew Robin Bain but he has "been shouldered with the blame for what is essentially one of this country's worst mass murders. The blame's been lumped on this guy who's dead, who can't defend himself."
Mr Parker says there is potential for a compensation claim worth more than a million taxpayer dollars.