A French police officer was arrested on Sunday last week after being caught carrying explosives through a busy Parisian train station.

According to police, officers in the city's Gare de Lyon station stopped the 29-year-old man to carry out a routine check and arrested him after finding the explosives - Le Figaro reported.

The off-duty gendarme was said to have resisted arrest but was forced into submission by several policemen.

The French police officer was arrested after being found with the explosives at Gare de Lyon station in Paris (pictured) [file photo]

After 96 hours of police custody, during which many interrogations were carried out, the unnamed man was referred to the French prosecutor's office.

He has now been placed under investigation and remanded in custody earlier today.

According to a source, being investigated for several offences including transportation of explosives and misappropriation of military equipment.

He has also been suspended from duty following the incident.

The source also said the man had previously served as a legionnaire, one of the French army's crack troops, during which time he specialised in handling explosives.