A leading professor in French politics has said the attack in Paris on Thursday night "came at the right time" for Marine Le Pen, the leader of the far-right Front National.
A lone gunman shot dead a police officer and injured two others on the Champs-Elysees after opening fire with an automatic weapon.
He was later shot dead by French security forces, and Islamic State have claimed responsibility.
The incident took place mere days before the country goes to the polls for the beginning of the French presidential election.
Dr. David Lees, a professor in French politics at the University of Warwick, said the timing of the attack would be beneficial to Le Pen, whose party is known for its tough stance on immigration and Islam.
In an interview with Julia Hartley-Brewer, Dr. Lees claimed the incident had occurred at a time when her campaign was suffering from attacks from the extreme left, and it plays into her hands.