A man was tackled by police while talking to journalists near the scene of the fatal shooting outside a police station in Paris.
The man had been speaking to Sky News’ Europe Correspondent Mark Stone and was showing him a video he had captured of the attacker before he was pulled away by police.
It follows the death of a man who was shot by police after he charged at officers waving a butcher’s knife and wearing a fake suicide vest. Police have confirmed they are treating the incident as “terror related” after a picture of the Isis flag was found on his body.
Mr Stone described the scene to the news channel.
He said a black man in his early twenties had approached him to show him footage he had made of the attacker’s body outside the police station.
But within moment the police had arrived, pulled him to the other side of the cordon and had taken the phone away.
The man attempted to flee but he was caught and taken to a police station.
Mr Stone said: "We are not clear what he was suspected of doing, but had he managed to break free and run, his life would undoubtedly have been in danger.
"The police here in Paris are taking no chances at all...For several hours police roamed the streets inside the cordon with their weapons drawn."
The knife threat occurred on the one-year anniversary of a terror attack at the Parisien offices of satirical news magazine Charlie Hebdo, in which 12 people - including two police officers - died. Four more people were killed at a Jewish deli in the city two days later.
France is currently under a state of emergency following further attacks on the Bataclan concert hall and several restaurants and bars throughout Paris in November, where 130 people were killed.
French police now have greater powers to arrest and detain terror suspects as well as preventing people from gathering in the street.
