In this case, I think there might be a case to be made.
"The prosecutor would be, I think, concerned … if the investigation was still going on behind the scenes, without them being looped in, while they're trying to prosecute a case," said Michael Arntfield, a criminologist and professor at Western University who worked for 16 years as a detective with the London Police Service in Ontario.
"If they say they can't interview him, that to me sounds like they've taken direction either from the Crown or from superior officers to not potentially interfere with the prosecution."
Yup.