The explosives specialist said that there were raw materials to make more than ten huge bombs. The hole from where the suspects were picked up before the Zaventem airport attack when raided lead 50kg of explosives made of Triacetone triperoxide (TATP), the similar substance that was used in the Paris attack in November 2015. The material used is reported by Prof Sidney Allford to be a mixture of home kitchen tools and can be easily detonated without the need for special equipment. The assembly was done by a non-chemist he reveals. Also, 15kg of explosives were found in a house in Schaerbeek district.