A MAN suspected of supplying the gun used in the Strasbourg Christmas market shooting that killed five people is facing terror charges.

He has been accused of criminal association with terrorists, as well as possessing and supplying arms in connection with a terrorist enterprise.

The man is suspected of furnishing the weapon that alleged gunman Cherif Chekatt used in the December 11 attack. He was remanded into custody.

Chekatt, 29, died in a shootout with police in Strasbourg on Thursday.

Two other people were arrested and detained on Monday as part of the terror investigation the Paris prosecutor’s office is conducting.

The death toll from the attack increased to five on Sunday night after a Polish man died of his wounds in a Strasbourg hospital.

Barto Orent-Niedzielski, 36, lived in the city, where he worked at the European Parliament as a journalist. A Thai tourist and an Italian journalist also died.

Orent-Niedzielski reportedly fought the gunman, stopping him from entering a crowded club.

Polish president Andrzej Duda wrote on Twitter: “I knew him by sight. I am shocked. I had not realized that he was the one mortally wounded protecting other people. Honor to his memory. RIP.”