A harrowing recording of an emergency call has shed some light on the death of a 19-year-old Walmart worker in Canada.

Police are investigating the death of a 19-year-old Walmart employee who was found in the store’s walk-in oven Saturday in Canada.

Amanda Moss, a spokesperson for Walmart Canada, said the company was deeply saddened by the tragic death of an employee. In a statement to CBS News, Moss said the store in question would remain closed until further notice to allow for further investigation and for employees to process the situation.