A shooting incident in Montreal on Monday left three people dead, including a police officer and the suspect.

According to reports from multiple sources, the shooting occurred at around 11:35am local time in the Côte-des-Neiges neighbourhood. A police officer was killed while responding to a call about a person with a gun sticking out of a window at a hotel. The suspect, who was armed with a long gun, opened fire on police officers, killing one and injuring another.

The second officer is reported to be in stable condition after being seriously injured in the shooting. A civilian also died in the incident, but it's unclear whether they were shot by the suspect or someone else.

Police Chief Fady Dagher described the scene as a "nightmare" and said that this was the first time in 24 years that a Montreal police officer had been killed in the line of duty.

The motive behind the shooting is still unknown, but Quebec's security minister Ian Lafrenière confirmed that multiple agencies were consulted before investigators concluded that it was not a terrorist attack. The area has since been locked down and officers have begun to leave the scene as traffic resumes.

This incident marks a rare occurrence in Montreal, which typically sees low levels of gun violence.