The events took place on Thursday evening in Frontonas, Isère.
Around 19: 00, a man is introduced into a tobacco shop and robbed the merchant.
The thief, very relaxed, asked him the contents of his box, threatening it with a housing connected to a wire, as if it held a bomb.
He then pulled out a firearm, was provided with approximately 1000 €, before taking the flight to La Verpillière.
A call for witnesses has been launched by the gendarmerie in order to find this bank robber. The young man is aged about 25 years and was wearing a parka.
If you have information about this assault, you can call the investigators at 04 74 90 40 17.