The citizen, known only as "S.", was also found to have a large quantity of jihadist literature in his house.
The case has recently taken a more sinister turn, however.
According to RTL, examination of the suspect's phone reveals that he carried out research on synagogues in in Paris, as well as research on joining jihadist groups in Syria.
His arrest was a collaboration between French customs and the United States where his package was intercepted and replaced (according to some reports) with a non-functional weapon, allowing authorities to arrest him after he took delivery.