A police officer stands guard on a street near a scene of a shooting in front of a mosque, in this still image from video, in Avignon, France July 3, 2017. [Photo/Agencies]

The two men on motorcycle shot dead a man and injured others in the city's Reynerie district before running away, said Europe1 broadcaster.

Two of the injured people were in serious situation, according to the report.

"No hypothesis is excluded but there is no terrorist element at this stage," regional authorities were quoted as saying.

Citing a source close to the investigation, the broadcaster said the shooting is likely linked with settlement of old scores between gangs.