Toronto Police say they have made arrests in the case of three robberies at pharmacies in Etobicoke and one at Yorkdale mall on Friday afternoon.

Police say the first robbery happened at a pharmacy at West Mall Bloor Plaza, near Bloor Street West and The West Mall.

Police allege that four teenaged boys entered a pharmacy all carrying handguns. After robbing the store and assaulting a woman in her 70s during the scuffle, the suspects fled in a grey truck, police say.

The second robbery occurred, at a plaza near Rexdale and Humberwood boulevards some time later, according to police.

Police say a group of young males entered a pharmacy all wearing masks and hoods and carrying weapons. An employee was assaulted.

Drugs and money were apparently stolen.

The third robbery, took place at Elmhurst Plaza, located near Elmhurst Drive and Islington Avenue, police say.

The suspects allegedly assaulted an employee and ran way with drugs and cash.

Another robbery took place in at Yorkdale mall.

This was unrelated to the pharmacy robberies.

Police say five teenagers entered the mall wearing masks with their hoods up.

Police arrested a boy as the rest were seen fleeing through the parking lot. The other four were later apprehended. A hammer was also seized during the arrest.

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Yorkdale mall was placed under hold and secure as a result of the robbery but it has since been lifted.

Police reiterated that the pharmacy robberies are not related to the mall robbery.