Police investigating the Brussels attacks found 15 kilogrammes (33 pounds) of TATP high explosives and a mass of bomb-making material during searches in the Schaerbeek district of the Belgian capital,  the federal prosecutor said Wednesday.

Frederic van Leeuw said police also found 150 litres (40 US gallons) of acetone, detonators, bags filled with nails plus other equipment used to make bombs of the type used in the attacks which killed 31 people and wounded another 270.

TATP high explosives have been used extensively by Islamic State jihadists.