The caretaker, Mohamed-Aslim Zafis, succumbed to his injuries and became Toronto's 52nd homicide victim of 2020.
Toronto Police say that a 28-year-old man was fatally hit by a train after he killed his parents at their Weston home Saturday afternoon.
The CBC report stated that the local homicide unit has taken over the investigation.
According to a police statement, the man was working as a volunteer caretaker at the mosque and had been in a chair outside the front doors ensuring that anyone entering was complying with COVID-19 health regulations.
Police are asking for the public's help in finding the alleged attacker, Cyrus Alaei, 22, of Toronto.
When emergency responders arrived at the scene, they located Zafis suffering from a stab wound to his neck. Police said in a news release that he was not living at the King George home.
"Both victims were stabbed and the incidents occurred within very close proximity of each other".
Idsinga says that while officers have not yet determined whether the same suspect is involved in both cases, investigators feel there are too many parallels to dismiss.
"At this stage in our investigation, it is too early to confirm if these two homicides are connected to one another, however we can not exclude that possibility", he said.
Officers have released a suspect photo and description as part of the second homicide, describing the individual as around 5-foot-6 and approximately 130 pounds.
Anyone who knew where he was before the homicide is urged to call police at 416-808-7400 or Crime Stoppers at 416-222-8477 (TIPS).