The Sûreté du Québec (SQ) have taken over a quadruple kidnapping case that took place in Old Montreal last week.
Montreal police transferred the case to provincial police over the weekend, after three of the victims, two women and a man in their early 20s were found safe on Saturday.
However, a fourth missing person is still unaccounted for.
On June 21, police say they were called around 4 a.m. about a conflict in an apartment building on de la Commune Street near Saint-Hubert Street.
The SQ said no other information will be released while the investigation is ongoing.