The Paris prosecutor has called for Paris Match magazine to be pulled from newsstands after it published CCTV images of the 14 July attack in Nice.
A lorry killed 86 people when it drove into crowds celebrating Bastille Day.
The publication of the images has angered a victims’ group, which accused the magazine of morbid sensationalism.
The magazine was still on sale on Thursday hours before a judge was due to rule on the request.
The prosecutor asked the court to “order the (magazine’s) withdrawal from sale” as well as a “ban on publication in all formats, particularly online”.