Police are investigating two pits located on the grounds of Haute de la Garenne.
A man has come forward and says he was asked to dig the two pits sometime in the 1980‘s, but staff refused to say why.
One of the pits is filled with a large amount of lime. Lime can be used to disintegrate corpses and hide the smell of decomposition. Nothing else was found in the pit though. The second pit is still being excavated.
Police are at a loss as to why the pits were dug or the one was filled with lime. They are asking anyone with knowledge of the pits to contact them.
According to the BBC: The witness told police when he asked the carers what the pits were for he was told it was "none of his concern".
He was asked to fill in the pits the next day and said he approached police because the incident had played on his mind for some years.
A spokeswoman said: "The team excavated the first pit and found it to be about 1.5 meters (5ft) deep.
"At the bottom of the pit was a large quantity of lime. There was nothing else in the hole.
"The inquiry team can think of no reason why this pit would have been created, nor why it was filled with lime. We would emphasize that we have no evidence of any motive."