Dozens of vehicles from the emergency services were sent to the area.
The shooting comes just two days after police arrested two men in southern Marseille with weapons and explosives who were suspected of preparing an attack to disrupt the first-round of the presidential election on Sunday.
France is in a state of emergency and at its highest possible level of alert since a string of terror attacks that began in 2015, which have killed over 230 people.
Thousands of troops and armed police have been deployed to guard tourist hotspots such as the Champs Elysees or other potential targets like government buildings and religious sites.
Up until now, polls showed voters more concerned about unemployment and their spending power than terrorism or security, though analysts warned this would change in the event of further bloodshed.
For weeks, centrist former banker Macron and National Front (FN) leader Marine Le Pen have been out in front but opinion polls now show there is a chance that any of the four leading candidates could reach the second-round runoff on May 7.
Scandal-plagued conservative Francois Fillon and far-left firebrand Jean-Luc Melenchon have closed the gap substantially in the last two weeks.
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)