A suspected serial killer is now facing charges in conjunction with the deaths of five gay men in Toronto.

Bruce McArthur was arrested January 18 in connection with the disappearances of Selim Esen, 44, and Andrew Kinsman, 49, who went missing last spring in the Gay Village.

Since then, police have also linked the 66-year-old landscaper to the deaths of Majeed Kayhan, Soroush Marmudi, and Dean Lisowick. The victims, all middle aged men, disappeared between 2012 and 2016.

Police believe the McArthur had a sexual relationship with Kinsman, but have yet to reveal any personal connections between him and the other victims. To date, authorities have unearthed the remains of at least three individuals from a property where McArthur previously landscaped.

"The city of Toronto has never seen anything like this," Homicide Detective Hank Idsinga told The Globe and Mail.

The city has dedicated an unprecedented amount of resources to the case, including 12 investigators, a forensics team, and a K9 unit. Previously, police had dismissed rumors of a serial killer targeting gay men, but Idsinga now says there's no telling how many victims McArthur might've killed.

McArthur is being held in custody until his next court date on February 14.