The investigation at Haut de la Garenne cost £4.5m
The chief constable of Wiltshire is to lead a discipline inquiry into the conduct of the chief officer of Jersey police.
Brian Moore will look at the conduct of Graham Power over the investigation of alleged abuse at the former Haut de la Garenne children's home.
It comes as Sussex Police have begun investigating how a report by Mr Power's former deputy was leaked.
The report was published on the blog of Senator Stuart Syvret.
The separate investigations are both linked to the former Haut de la Garenne children's home.
It hit the headlines in February when police found what they believed to be part of a child's skull and began a murder investigation.
Scores of people then came forward saying they had been abused at the home between the early 1960s and 1986, leading to a number of people being charged by police.
But the piece of suspected skull later turned out to be a piece of coconut, and detectives found no-one had been murdered.
The plan to investigate Mr Power, who is suspended from duty, was discussed in Jersey's State Assembly on Tuesday and Wiltshire Police have now confirmed the inquiry will be led by Mr Moore.
In November Jersey's government criticised the £4.5m police investigation into the case and ministers suspended Mr Power.
Graham Power was suspended last month
Mr Power said his suspension had not followed correct procedure, a claim rejected by the home affairs minister Andrew Lewis.
Mr Lewis told BBC News procedures had been followed "to the letter".
Meanwhile, the investigation into the leak of the report produced by former Deputy Chief Officer Lenny Harper has been ordered by the post's current occupant, David Warcup.
Mr Harper's report concerned the collapse of prosecution proceedings against certain suspects and was intended for the chief officer and the attorney general. It later appeared on Senator Syvret's blog.
Sussex Police say they want to speak to Senator Syvret as a witness, but he has so far declined to offer assistance.