Shots were fired again in the Montreal North area on Wednesday evening.
Shortly after 10 p.m., police were alerted by 911 calls to gunshots heard on Lapierre, near Pascal Street.
On the spot, the police did not locate any victim or suspect, while casings were found on the ground.
The police did not, however, locate a projectile impact, said Caroline Chèvrefils of the Service de police de la Ville de Montréal (SPVM).
The scene was protected by a security perimeter for the purposes of the investigation, while investigators and forensic identification technicians were expected on the scene.
The canine unit was also requested to help in the search for clues, added the SPVM spokesperson.
Witnesses to the event were to be met by investigators overnight, it was added.