According to the outlet, the car was found in an underground parking area and had an Allah Akbar inscription along with a battery wrapped with insulating tape.
"The police have blown up the vehicle twice as a security measure," local senior official Philippe Descrouet said, as quoted by Le Figaro.
During the operation, some 600 people were blocked in the mall.
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Over the past few years, France has faced several deadly terrorist attacks, including the attacks in Paris and Saint-Denis in November 2015 that claimed the lives of 130 people.