The ongoing Tasmania Police investigation into a conspiracy to pervert the course of justice has resulted in the charging of a third person.

Earlier today Detectives arrested a 51 year old man from Sandy Bay. He was charged with Perverting Justice and detained to appear in the Hobart Magistrates Court this afternoon.

Police will allege the 51 year old Perverted Justice by deliberately influencing a witness to manufacture evidence.

During an unrelated investigation in early February this year, police were provided with information alleging a possible conspiracy to pervert justice by falsifying evidence in support of the appeal of Susan Neill-Fraser which is currently before the Appeals Court.

Police say that the actions of a number of people are being investigated and that the investigation will be ongoing for some time.

Detectives are aware that some members of the public may have information relating to the investigation and are asking anyone who has to contact Crime Stoppers on 1800 333 000 or online at crimestopperstas.com.au. Information can be provided anonymously.