The prosecution said in court Wednesday that McArthur, a 66-year-old landscaper, has been charged with first-degree murder in the death of Abdulbasir Faizi.
The 66-year-old landscaper has already been charged with the first-degree murder of six men who have connections to the city's LGBTQ community.
Police had earlier recovered the remains of at least seven people from planters found at a home in midtown Toronto where McArthur worked and stored equipment.
On January 29, officials revealed that McArthur was charged with three more counts of first-degree murder related to the deaths of Dean Lisowick, Majeed Kayhan and Soroush Mahmudi.
Foremost is the newest murder charge against McArthur that has been made possible by the identification of another body.
Police set up a task force, Project Houston, in 2012 after Skandaraj Navaratnam, Majeed Kayhan and Faizi, an Afghan who immigrated to Canada from Iran, went missing. At Wednesday, authorities were hoping to identify a few of this human remains located in plantations in a Toronto property McArthur employed as storage because of his landscaping firm, as stated by the Associated Press.
Toronto police said last week that they are looking for any links between McArthur and a series of grisly, unsolved murders from the 1970s. It closed after 18 months as it did not establish the whereabouts of the missing men or resolve the circumstances on their disappearances, police said.
The 2016 interaction was the second time police spoke with McArthur in the years before he was charged with murder. Police have said the man was dead when the picture was taken, but won't say when or how they obtained the image.
The investigative team is now reviewing 15 homicide cold cases from 1975 to 1997, he said.
Faizi's vehicle was found a short distance from the house McArthur used as storage. The photo was released with the hope that a member of the public may be able to identify him.
Many of McArthur's alleged victims were the subject of two previous police probes into the disappearances of men from the city's gay village.
"We've quite frankly never seen anything like it", Idsinga said. McArthur popped up on the police radar in the fall of 2017 as part of Project Prism.