The terrorist attack which took place at a supermarket in Russia’s second-largest city, St. Petersburg, has prompted security fears ahead of next year’s FIFA World Cup.

The tournament in Russia is expected to start as from June 14, 2018 and it will last for one month.

At least 13 people sustained injuries during the attack on Wednesday evening when an improvised explosive device blew at a storage area for customers’ bags at the aforementioned supermarket.

According to investigators, the device was made up of 200 grams (7 ounces) of explosives and was rigged with shrapnel to prompt more damage.

Russian President Vladimir Putin while confirming the incident on Thursday revealed that it was a terrorist attack, and that another attack had been thwarted.