MONTREAL — The Supreme Court of Canada has partly upheld an appeal from the media about a trial held in Quebec behind closed doors involving a police informant, but the high court insists no “secret trial” took place.

The trial judge and Quebec Court of Appeal acted correctly in keeping information secret that could identify the informant, such as the nature of the crime, where it allegedly took place, and the name of the judge involved in the case, the Supreme Court said in a unanimous ruling on Friday. The case had no docket number, and the names of the lawyers involved were also kept from the public.