The police official declined to comment on reports the thieves walked away with about 1 million euros ($1.32 million) of loot, saying the company was still evaluating the loss.
Christophe Crepin from the police union UNSA told reporters four masked and armed individuals forced their way into the shop and afterwards escaped in a van.
"They were well prepared. As the majority of police were busy watching the Champs Elysees (for New Year's Eve celebrations), the robbers took advantage of this opportunity," he said.