Video footage was released by Toronto police at a news conference on Tuesday of a suspect who was spotted on camera walking near the home of philanthropists Barry and Honey Sherman.
In the video, the person can be seen walking with an unusual gait in his leg.
The footage was made public nearly four years after the killing of the 75-year-old founder of pharmaceutical company Apotex and his 70-year-old wife. The bodies of the couple were discovered on Friday, December 15, 2017 by a realtor who was showing the home to prospective buyers.
Police have said autopsy results showed the couple died by “ligature neck compression.”
Investigators have also said there was no sign of a break-in.
What wasn’t captured on video, according to police, shows the individual walking in the area of the Sherman house, and this person stays there a while before leaving.
Police say they have not been able to determine why the person was in the neighbourhood, and added the actions of the individual are “highly suspicious.”
Investigators say video analysis shows the individual is 5’6 to 5’9 tall, but they are unable to say the individual’s sex, race or other identifiers.
Late last year, police said a person of interest had been identified in the case, but no arrests have been made.
The family offered a $10 million reward for information that would help solve the case, and even hired a team of private investigators.