Shocked onlookers claim police carrying firearms rushed to the scene shortly after 6pm this evening.
A police operation took place in the city’s Gobelins district as three men reportedly threatened to blow up a bus.
The area was cordoned off and the nearby metro station was closed.
A suspicious package was then reported on Bus 91 along Saint-Marcel Boulevard as terror cops rushed to calm the situation.
The security forces intervened “as a precaution” and checks are in progress, according to local media.
The men reportedly “uttered threats” as emergency services arrived at the scene.
It was later confirmed that three men were arrested in the incident.