Peel Regional Police said officers were called to a retail store near Mavis and Brittania streets around 6 p.m. after receiving multiple reports of a man and woman suffering from stabbing injuries.
“Police arrived and found a female inside with obvious signs of trauma,” said Const.  Philip Yake told reporters outside the store.  “Unfortunately, he was pronounced dead at the scene.  Police also found a man suffering from minor injuries.  He was taken into custody and taken to a local hospital for medical attention.”
Yake would not comment on the relationship between the two sides or a possible motive.  However, he said police believe the fatal stabbing is an “isolated incident” and there is no ongoing public safety concern.
“I cannot release any of the information about the parties involved because the investigation is still in its early stages,” Yake said.
Patrons were seen standing outside the store on Monday afternoon, visibly shaken.  Yellow police tape was also seen blocking off a section of the parking lot outside the store.
Yake said there were likely many patrons inside the store when the fatal stabbing occurred.
“We got a lot of calls about it, so it was probably pretty busy,” he said.   
Homicide detectives with Peel Police have now taken over the case.
No other details have been released so far.