Three people were injured in the attack, which took place in the emergency room of Bel-Air hospital on Tuesday night.
An individual in his 40s threatened hospital staff with a bottle of ammonia before spraying the dangerous liquid on security guards.
The police were alerted and quickly arrived at the scene. The brought the suspect under control. The man was already known to police for possessing narcotics and making threats with a weapon.
Firefighters evacuated the emergency room around 9.30pm and took care of 17 patients, including three who were slightly injured. The emergency room was reopened on Wednesday morning.
Our colleagues at 5Minutes contacted Commissioner Lacassin, who explained that the suspect had already spent time in a psychiatric hospital. To his knowledge, the victims were not severely injured.
