TORONTO -- Here is a glance at the alleged victims of Bruce McArthur, a 66-year-old Toronto landscaper charged with six counts of first-degree murder:

MAJEED KAYHAN

Majeed Kayhan

The 58-year-old Toronto man was reported missing in October 2012.

Police investigated his death as part of Project Houston, which ran from November 2012 to April 2014 and probed the disappearances of three men who went missing from Toronto's gay village.

The probe was closed after yielding neither suspects nor leads on what happened to the men.

SOROUSH MAHMUDI

Soroush Mahmudi,

The 50-year-old was reported missing in 2015 by his family in east Toronto.

Police have not said whether Mahmudi had any sort of relationship with McArthur.

DEAN LISOWICK

Dean Lisowick

Police believe Lisowick, of no fixed address, was killed sometime between May 2016 and July 2017. They say he was 43 or 44 years old and was never reported missing.

Detectives have said Lisowick didn't fit the profile of the earlier victims, who were gay and of Middle Eastern descent.

SELIM ESEN

Selim Esen

Esen, 44, of Toronto, vanished from the city's gay village on April 14, 2017.

The disappearance became part of a police investigation called Project Prism launched in August. Five months later, police charged McArthur with Esen's presumed death.

ANDREW KINSMAN

Andrew Kinsman

Kinsman, 49, was reported missing from the gay village in late June 2017. The Toronto man was a subject of Project Prism, and police have said he had a sexual relationship with McArthur.

Kinsman's sisters said they searched for their brother for six months before police eventually charged McArthur in his death. Karen Coles said he was "well-known in his community" and "loved by all."

SKANDARAJ NAVARATNAM

Missing men Skandaraj "Skanda" Navaratnam

The 40-year-old went missing in 2010 and his disappearance was investigated as part of Project Houston.

Police charged McArthur with Navaratnam's death on Feb. 23.