Retail and pharmacy chain London Drugs says it was the “victim of a cybersecurity incident” Sunday and has shuttered its stores across Western Canada until further notice.

The retailer, which is headquartered in B.C., says the closure is out of “an abundance of caution” and that it immediately took measures to counter the attack once it was discovered.

“At this time, we have no reason to believe that customer or employee data has been impacted,” the company said in a statement emailed to CBC News around 5:30 p.m. PT on Sunday.

The chain says pharmacists would still support customers with urgent pharmacy needs, but anyone seeking information should call their local pharmacy to make arrangements.