GRONINGEN - The public prosecutor's office (OM) in Groningen is very unhappy with the court's decision that a police criminal informant must be heard. "The joke of criminal informants is that their anonymity is guaranteed. The court is now shooting this leak. This way we can shut down our informants," said prosecutor spokeswoman Kirsten Smit. The Groningen court decided Monday that a criminal informant may be questioned by a lawyer. The informant would have crucial information that might exculpate and dis for the man suspected of having shot dead the Amsterdam rapper Rel in Hoogezand last November. The Justice Department vigorously opposed the lawyer's request to be allowed to question the informant. The court endorses the interests of justice, but considers the interests of the defense outweighed in this case. The court's decision is exceptional. The judges spoke of "a difficult issue.