Also, the actor’s residence at Douchy-Montcorbon, which is located roughly 135 kilometers (84 miles) south of Paris, included a shooting range.
As per the prosecution, Mr. Delon lacked the necessary permit to possess a firearm.
The 88-year-old actor, well-known for his tough-guy attitude in popular films like Borsalino and The Samurai, was a star of the heyday of French cinema.
A court-appointed representative who was sent to Mr. Delon’s residence discovered a weapon and informed the judge, prompting the search order on Tuesday.
The celebrity has experienced deteriorating health in the past few years following a stroke in 2019 and another serious condition.