Islamic State leaders are reportedly asking its followers to carry out terror attacks by poisoning food in Western supermarkets.

ISIS fanatics could be targeting British and U.S. shops after the terror group perfected their methods using Iraqi prisoners as 'human guinea pigs'.

The details of the 'food poison tests' were uncovered in Mosul, Iraq, after the city was liberated from ISIS earlier this year.

Food terror: Islamic State terrorists could be looking to target supermarkets in the U.S. and the UK, poisoning fresh produce

It is now feared that the ways of contaminating food could be used on a larger scale in attacks on the West, according to the Italian news agency ANSA.

It would not be the first time ISIS followers have sought to spread terror and death by using everyday objects as weapons.

In recent years, several deadly terror attacks have been carried out using large vehicles and cars, driving into crowds of people in public spaces.

Just last month, 13 people died and some 130 were injured when Islamist terrorists drove a white van down Barcelona's popular shopping street Las Ramblas.

Attack plans: Details of how ISIS militants had used prisoners as guinea pigs for 'food poison tests' were uncovered in Mosul, Iraq (pictured during ISIS rule in 2014)

Earlier this week, a two-year-long investigation by a British journalist found that ISIS had been social media to find young, impressionable Muslims to carry out an attack in London.

A reporter working for BBC Inside Out posing as a 17-year-old living with his parents was told by ISIS recruiters as early as July last year to target London Bridge with a ‘truck, axe, anything can work’.

Eleven months later, three terrorists used a rented van to mowed down pedestrians on the famous bridge, before stabbing Saturday night revellers, killing eight people before being shot dead by police.